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142314215508 = 22323953172653
BaseRepresentation
bin1000010010001010010…
…1101001100001010100
3111121100010022012121200
42010202211221201110
54312424414344013
6145213411312500
713165451605203
oct2044245514124
9447303265550
10142314215508
115539a734543
12236b88ab730
131056017369a
146c60b1b23a
153a7de9ee73
hex2122969854

142314215508 has 18 divisors (see below), whose sum is σ = 359738711514. Its totient is φ = 47438071824.

The previous prime is 142314215419. The next prime is 142314215509. The reversal of 142314215508 is 805512413241.

142314215508 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 142 + 1 + 5 + 508 = 666.

It can be written as a sum of positive squares in only one way, i.e., 142077732624 + 236482884 = 376932^2 + 15378^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3953172653 = 142314215508 / (1 + 4 + 2 + 3 + 1 + 4 + 2 + 1 + 5 + 5 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142314215509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1976586291 + ... + 1976586362.

It is an arithmetic number, because the mean of its divisors is an integer number (19985483973).

Almost surely, 2142314215508 is an apocalyptic number.

142314215508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142314215508 is an abundant number, since it is smaller than the sum of its proper divisors (217424496006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142314215508 is a wasteful number, since it uses less digits than its factorization.

142314215508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3953172663 (or 3953172658 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

Adding to 142314215508 its reverse (805512413241), we get a palindrome (947826628749).

The spelling of 142314215508 in words is "one hundred forty-two billion, three hundred fourteen million, two hundred fifteen thousand, five hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 3953172653 7906345306 11859517959 15812690612 23719035918 35578553877 47438071836 71157107754 142314215508