42345556 has 24 divisors (see below), whose sum is σ = 81323424. Its totient is φ = 19133280.

The previous prime is 42345491. The next prime is 42345587. The reversal of 42345556 is 65554324.

It is a super-2 number, since 2×42345556² = 3586292225898272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4831 + ... + 10393.

It is an arithmetic number, because the mean of its divisors is an integer number (3388476).

Almost surely, 2^42345556 is an apocalyptic number.

It is an amenable number.

42345556 is a deficient number, since it is larger than the sum of its proper divisors (38977868).

42345556 is a wasteful number, since it uses less digits than its factorization.

42345556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751 (or 5749 counting only the distinct ones).

The product of its digits is 72000, while the sum is 34.

The square root of 42345556 is about 6507.3463101329. The cubic root of 42345556 is about 348.5533649986.

The spelling of 42345556 in words is "forty-two million, three hundred forty-five thousand, five hundred fifty-six".