42311857 has 16 divisors (see below), whose sum is σ = 49496832. Its totient is φ = 35421120.

The previous prime is 42311851. The next prime is 42311887. The reversal of 42311857 is 75811324.

It is not a de Polignac number, because 42311857 - 2³ = 42311849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42311851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83868 + ... + 84370.

It is an arithmetic number, because the mean of its divisors is an integer number (3093552).

Almost surely, 2^42311857 is an apocalyptic number.

It is an amenable number.

42311857 is a deficient number, since it is larger than the sum of its proper divisors (7184975).

42311857 is a wasteful number, since it uses less digits than its factorization.

42311857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768.

The product of its digits is 6720, while the sum is 31.

The square root of 42311857 is about 6504.7564904460. The cubic root of 42311857 is about 348.4608797560.

The spelling of 42311857 in words is "forty-two million, three hundred eleven thousand, eight hundred fifty-seven".