42156125532 has 18 divisors (see below), whose sum is σ = 106561317408. Its totient is φ = 14052041832.

The previous prime is 42156125443. The next prime is 42156125563. The reversal of 42156125532 is 23552165124.

42156125532 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 612 + 5 + 5 + 32 = 666.

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: 1171003487 = 42156125532 / (4 + 2 + 1 + 5 + 6 + 1 + 2 + 5 + 5 + 3 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 585501708 + ... + 585501779.

Almost surely, 2^42156125532 is an apocalyptic number.

It is an amenable number.

42156125532 is an abundant number, since it is smaller than the sum of its proper divisors (64405191876).

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

42156125532 is a wasteful number, since it uses less digits than its factorization.

42156125532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171003497 (or 1171003492 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The spelling of 42156125532 in words is "forty-two billion, one hundred fifty-six million, one hundred twenty-five thousand, five hundred thirty-two".