42556855 has 32 divisors (see below), whose sum is σ = 57811968. Its totient is φ = 29808000.

The previous prime is 42556853. The next prime is 42556861. The reversal of 42556855 is 55865524.

It is not a de Polignac number, because 42556855 - 2¹ = 42556853 is a prime.

It is a super-2 number, since 2×42556855² = 3622171814982050, 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 (42556853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261004 + ... + 261166.

It is an arithmetic number, because the mean of its divisors is an integer number (1806624).

Almost surely, 2^42556855 is an apocalyptic number.

42556855 is a deficient number, since it is larger than the sum of its proper divisors (15255113).

42556855 is a wasteful number, since it uses less digits than its factorization.

42556855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its digits is 240000, while the sum is 40.

The square root of 42556855 is about 6523.5615272641. The cubic root of 42556855 is about 349.1321491983.

The spelling of 42556855 in words is "forty-two million, five hundred fifty-six thousand, eight hundred fifty-five".