42981456 has 40 divisors (see below), whose sum is σ = 126898624. Its totient is φ = 12280320.

The previous prime is 42981437. The next prime is 42981461. The reversal of 42981456 is 65418924.

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, 63625 + ... + 64296.

Almost surely, 2^42981456 is an apocalyptic number.

It is an amenable number.

42981456 is an abundant number, since it is smaller than the sum of its proper divisors (83917168).

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

42981456 is a wasteful number, since it uses less digits than its factorization.

42981456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127939 (or 127933 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 42981456 is about 6556.0244050797. The cubic root of 42981456 is about 350.2894367712.

The spelling of 42981456 in words is "forty-two million, nine hundred eighty-one thousand, four hundred fifty-six".