42774807 has 16 divisors (see below), whose sum is σ = 57812832. Its totient is φ = 28129920.

The previous prime is 42774803. The next prime is 42774817. The reversal of 42774807 is 70847724.

It is not a de Polignac number, because 42774807 - 2² = 42774803 is a prime.

It is a super-2 number, since 2×42774807² = 3659368227774498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42774803) 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, 92557 + ... + 93017.

It is an arithmetic number, because the mean of its divisors is an integer number (3613302).

Almost surely, 2^42774807 is an apocalyptic number.

42774807 is a deficient number, since it is larger than the sum of its proper divisors (15038025).

42774807 is a wasteful number, since it uses less digits than its factorization.

42774807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818.

The product of its (nonzero) digits is 87808, while the sum is 39.

The square root of 42774807 is about 6540.2451788905. The cubic root of 42774807 is about 349.7271533408.

The spelling of 42774807 in words is "forty-two million, seven hundred seventy-four thousand, eight hundred seven".