42157296 has 30 divisors (see below), whose sum is σ = 117982280. Its totient is φ = 14052384.

The previous prime is 42157289. The next prime is 42157301. The reversal of 42157296 is 69275124.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42157296.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146236 + ... + 146523.

Almost surely, 2^42157296 is an apocalyptic number.

It is an amenable number.

42157296 is an abundant number, since it is smaller than the sum of its proper divisors (75824984).

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

42157296 is a wasteful number, since it uses less digits than its factorization.

42157296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292773 (or 292764 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 42157296 is about 6492.8650070674. The cubic root of 42157296 is about 348.0360644352.

It can be divided in two parts, 4215 and 7296, that added together give a palindrome (11511).

The spelling of 42157296 in words is "forty-two million, one hundred fifty-seven thousand, two hundred ninety-six".