42056770 has 32 divisors (see below), whose sum is σ = 89312256. Its totient is φ = 13953600.

The previous prime is 42056767. The next prime is 42056783. The reversal of 42056770 is 7765024.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7521 + ... + 11860.

It is an arithmetic number, because the mean of its divisors is an integer number (2791008).

Almost surely, 2^42056770 is an apocalyptic number.

42056770 is an abundant number, since it is smaller than the sum of its proper divisors (47255486).

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

42056770 is a wasteful number, since it uses less digits than its factorization.

42056770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19426.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 42056770 is about 6485.1191199545. The cubic root of 42056770 is about 347.7592082897.

The spelling of 42056770 in words is "forty-two million, fifty-six thousand, seven hundred seventy".