42556799 has 8 divisors (see below), whose sum is σ = 43731072. Its totient is φ = 41391000.

The previous prime is 42556781. The next prime is 42556823. The reversal of 42556799 is 99765524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42556799 - 2¹² = 42552703 is a prime.

It is a super-2 number, since 2×42556799² = 3622162282252802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556099) 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, 8822 + ... + 12764.

It is an arithmetic number, because the mean of its divisors is an integer number (5466384).

Almost surely, 2^42556799 is an apocalyptic number.

42556799 is a deficient number, since it is larger than the sum of its proper divisors (1174273).

42556799 is a wasteful number, since it uses less digits than its factorization.

42556799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237.

The product of its digits is 680400, while the sum is 47.

The square root of 42556799 is about 6523.5572351287. The cubic root of 42556799 is about 349.1319960588.

The spelling of 42556799 in words is "forty-two million, five hundred fifty-six thousand, seven hundred ninety-nine".