42878070 has 24 divisors (see below), whose sum is σ = 111483216. Its totient is φ = 11434128.

The previous prime is 42878047. The next prime is 42878081. The reversal of 42878070 is 7087824.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 238122 + ... + 238301.

It is an arithmetic number, because the mean of its divisors is an integer number (4645134).

Almost surely, 2^42878070 is an apocalyptic number.

42878070 is an abundant number, since it is smaller than the sum of its proper divisors (68605146).

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

42878070 is a wasteful number, since it uses less digits than its factorization.

42878070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476436 (or 476433 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 42878070 is about 6548.1348489474. The cubic root of 42878070 is about 350.0083535421.

The spelling of 42878070 in words is "forty-two million, eight hundred seventy-eight thousand, seventy".