42057956 has 24 divisors (see below), whose sum is σ = 75620160. Its totient is φ = 20456352.

The previous prime is 42057931. The next prime is 42057959. The reversal of 42057956 is 65975024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42057959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75230 + ... + 75786.

It is an arithmetic number, because the mean of its divisors is an integer number (3150840).

Almost surely, 2^42057956 is an apocalyptic number.

It is an amenable number.

42057956 is a deficient number, since it is larger than the sum of its proper divisors (33562204).

42057956 is a wasteful number, since it uses less digits than its factorization.

42057956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 42057956 is about 6485.2105594190. The cubic root of 42057956 is about 347.7624771931.

The spelling of 42057956 in words is "forty-two million, fifty-seven thousand, nine hundred fifty-six".