42012528 has 20 divisors (see below), whose sum is σ = 108532488. Its totient is φ = 14004160.

The previous prime is 42012521. The next prime is 42012541. The reversal of 42012528 is 82521024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 42012498 and 42012507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012521) 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, 437583 + ... + 437678.

Almost surely, 2^42012528 is an apocalyptic number.

42012528 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42012528 is an abundant number, since it is smaller than the sum of its proper divisors (66519960).

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

42012528 is a wasteful number, since it uses less digits than its factorization.

42012528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875272 (or 875266 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 42012528 is about 6481.7071825253. The cubic root of 42012528 is about 347.6372226892.

The spelling of 42012528 in words is "forty-two million, twelve thousand, five hundred twenty-eight".