42579877 has 4 divisors (see below), whose sum is σ = 44431200. Its totient is φ = 40728556.

The previous prime is 42579863. The next prime is 42579937. The reversal of 42579877 is 77897524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42579877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42579877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42579827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925627 + ... + 925672.

It is an arithmetic number, because the mean of its divisors is an integer number (11107800).

Almost surely, 2^42579877 is an apocalyptic number.

It is an amenable number.

42579877 is a deficient number, since it is larger than the sum of its proper divisors (1851323).

42579877 is a wasteful number, since it uses less digits than its factorization.

42579877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851322.

The product of its digits is 987840, while the sum is 49.

The square root of 42579877 is about 6525.3258156202. The cubic root of 42579877 is about 349.1950945717.

The spelling of 42579877 in words is "forty-two million, five hundred seventy-nine thousand, eight hundred seventy-seven".