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142512768 = 27321719383
BaseRepresentation
bin10000111111010…
…01001010000000
3100221011101202200
420133221022000
5242440402033
622050313200
73350224056
oct1037511200
9327141680
10142512768
1173498a52
123b888800
13236a9ca8
1414cda1d6
15c7a1013
hex87e9280

142512768 has 192 divisors, whose sum is σ = 458265600. Its totient is φ = 42246144.

The previous prime is 142512767. The next prime is 142512779. The reversal of 142512768 is 867215241.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142512767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 371905 + ... + 372287.

It is an arithmetic number, because the mean of its divisors is an integer number (2386800).

Almost surely, 2142512768 is an apocalyptic number.

142512768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142512768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229132800).

142512768 is an abundant number, since it is smaller than the sum of its proper divisors (315752832).

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

142512768 is a wasteful number, since it uses less digits than its factorization.

142512768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 424 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 142512768 is about 11937.8711670046. The cubic root of 142512768 is about 522.3375629612.

The spelling of 142512768 in words is "one hundred forty-two million, five hundred twelve thousand, seven hundred sixty-eight".