42977944 has 8 divisors (see below), whose sum is σ = 80583660. Its totient is φ = 21488968.

The previous prime is 42977939. The next prime is 42977953. The reversal of 42977944 is 44977924.

42977944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42977894 and 42977903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2686114 + ... + 2686129.

Almost surely, 2^42977944 is an apocalyptic number.

It is an amenable number.

42977944 is a deficient number, since it is larger than the sum of its proper divisors (37605716).

42977944 is a wasteful number, since it uses less digits than its factorization.

42977944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372249 (or 5372245 counting only the distinct ones).

The product of its digits is 508032, while the sum is 46.

The square root of 42977944 is about 6555.7565543574. The cubic root of 42977944 is about 350.2798958349.

The spelling of 42977944 in words is "forty-two million, nine hundred seventy-seven thousand, nine hundred forty-four".