42446556 has 36 divisors (see below), whose sum is σ = 107666832. Its totient is φ = 14099904.

The previous prime is 42446543. The next prime is 42446561. The reversal of 42446556 is 65564424.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×42446556² = 3603420232522272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 42446556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9385 + ... + 13151.

Almost surely, 2^42446556 is an apocalyptic number.

It is an amenable number.

42446556 is an abundant number, since it is smaller than the sum of its proper divisors (65220276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42446556 is a wasteful number, since it uses less digits than its factorization.

42446556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090 (or 4085 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 42446556 is about 6515.1021480864. The cubic root of 42446556 is about 348.8302609431.

The spelling of 42446556 in words is "forty-two million, four hundred forty-six thousand, five hundred fifty-six".