42156597 has 16 divisors (see below), whose sum is σ = 64356992. Its totient is φ = 24045120.

The previous prime is 42156563. The next prime is 42156607. The reversal of 42156597 is 79565124.

It is a de Polignac number, because none of the positive numbers 2^k-42156597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12363 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (4022312).

Almost surely, 2^42156597 is an apocalyptic number.

It is an amenable number.

42156597 is a deficient number, since it is larger than the sum of its proper divisors (22200395).

42156597 is a wasteful number, since it uses less digits than its factorization.

42156597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3708.

The product of its digits is 75600, while the sum is 39.

The square root of 42156597 is about 6492.8111785266. The cubic root of 42156597 is about 348.0341408571.

The spelling of 42156597 in words is "forty-two million, one hundred fifty-six thousand, five hundred ninety-seven".