42057807 has 16 divisors (see below), whose sum is σ = 61324032. Its totient is φ = 25427520.

The previous prime is 42057803. The next prime is 42057817. The reversal of 42057807 is 70875024.

It is not a de Polignac number, because 42057807 - 2² = 42057803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42057803) 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, 14763 + ... + 17379.

It is an arithmetic number, because the mean of its divisors is an integer number (3832752).

Almost surely, 2^42057807 is an apocalyptic number.

42057807 is a deficient number, since it is larger than the sum of its proper divisors (19266225).

42057807 is a wasteful number, since it uses less digits than its factorization.

42057807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 42057807 is about 6485.1990717325. The cubic root of 42057807 is about 347.7620665163.

The spelling of 42057807 in words is "forty-two million, fifty-seven thousand, eight hundred seven".