42055886 has 4 divisors (see below), whose sum is σ = 63083832. Its totient is φ = 21027942.

The previous prime is 42055883. The next prime is 42055903. The reversal of 42055886 is 68855024.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42055883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10513970 + ... + 10513973.

It is an arithmetic number, because the mean of its divisors is an integer number (15770958).

Almost surely, 2^42055886 is an apocalyptic number.

42055886 is a deficient number, since it is larger than the sum of its proper divisors (21027946).

42055886 is a wasteful number, since it uses less digits than its factorization.

42055886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21027945.

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 42055886 is about 6485.0509635623. The cubic root of 42055886 is about 347.7567717316.

The spelling of 42055886 in words is "forty-two million, fifty-five thousand, eight hundred eighty-six".