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142754148 = 22323965393
BaseRepresentation
bin10001000001001…
…00000101100100
3100221121122212200
420200210011210
5243021113043
622055414500
73352250565
oct1040440544
9327548780
10142754148
1173643339
123b984430
1323762b14
1414d6016c
15c7ec7d3
hex8824164

142754148 has 18 divisors (see below), whose sum is σ = 360850854. Its totient is φ = 47584704.

The previous prime is 142754113. The next prime is 142754149. The reversal of 142754148 is 841457241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75481344 + 67272804 = 8688^2 + 8202^2 .

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: 3965393 = 142754148 / (1 + 4 + 2 + 7 + 5 + 4 + 1 + 4 + 8).

It is not an unprimeable number, because it can be changed into a prime (142754149) 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, 1982661 + ... + 1982732.

Almost surely, 2142754148 is an apocalyptic number.

142754148 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142754148 is an abundant number, since it is smaller than the sum of its proper divisors (218096706).

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

142754148 is a wasteful number, since it uses less digits than its factorization.

142754148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965403 (or 3965398 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 142754148 is about 11947.9767324849. The cubic root of 142754148 is about 522.6322984815.

The spelling of 142754148 in words is "one hundred forty-two million, seven hundred fifty-four thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 3965393 7930786 11896179 15861572 23792358 35688537 47584716 71377074 142754148