42877928 has 8 divisors (see below), whose sum is σ = 80396130. Its totient is φ = 21438960.

The previous prime is 42877909. The next prime is 42877949. The reversal of 42877928 is 82977824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36024004 + 6853924 = 6002^2 + 2618^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2679863 + ... + 2679878.

Almost surely, 2^42877928 is an apocalyptic number.

It is an amenable number.

42877928 is a deficient number, since it is larger than the sum of its proper divisors (37518202).

42877928 is a wasteful number, since it uses less digits than its factorization.

42877928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359747 (or 5359743 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 42877928 is about 6548.1240061563. The cubic root of 42877928 is about 350.0079671656.

The spelling of 42877928 in words is "forty-two million, eight hundred seventy-seven thousand, nine hundred twenty-eight".