42055444 has 6 divisors (see below), whose sum is σ = 73597034. Its totient is φ = 21027720.

The previous prime is 42055411. The next prime is 42055451. The reversal of 42055444 is 44455024.

It can be written as a sum of positive squares in only one way, i.e., 39690000 + 2365444 = 6300^2 + 1538^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5256927 + ... + 5256934.

Almost surely, 2^42055444 is an apocalyptic number.

It is an amenable number.

42055444 is a deficient number, since it is larger than the sum of its proper divisors (31541590).

42055444 is a wasteful number, since it uses less digits than its factorization.

42055444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10513865 (or 10513863 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 42055444 is about 6485.0168850975. The cubic root of 42055444 is about 347.7555534398.

The spelling of 42055444 in words is "forty-two million, fifty-five thousand, four hundred forty-four".