42043312 has 20 divisors (see below), whose sum is σ = 86251176. Its totient is φ = 19784960.

The previous prime is 42043303. The next prime is 42043319. The reversal of 42043312 is 21334024.

It is a self number, because there is not a number n which added to its sum of digits gives 42043312.

It is not an unprimeable number, because it can be changed into a prime (42043319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77014 + ... + 77557.

Almost surely, 2^42043312 is an apocalyptic number.

It is an amenable number.

42043312 is an abundant number, since it is smaller than the sum of its proper divisors (44207864).

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

42043312 is a wasteful number, since it uses less digits than its factorization.

42043312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154596 (or 154590 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42043312 is about 6484.0814307040. The cubic root of 42043312 is about 347.7221104755.

Adding to 42043312 its reverse (21334024), we get a palindrome (63377336).

The spelling of 42043312 in words is "forty-two million, forty-three thousand, three hundred twelve".