42876981 has 12 divisors (see below), whose sum is σ = 70781152. Its totient is φ = 24501096.

The previous prime is 42876979. The next prime is 42877001. The reversal of 42876981 is 18967824.

It is not a de Polignac number, because 42876981 - 2¹ = 42876979 is a prime.

It is a super-2 number, since 2×42876981² = 3676870999348722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42876781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340231 + ... + 340356.

Almost surely, 2^42876981 is an apocalyptic number.

It is an amenable number.

42876981 is a deficient number, since it is larger than the sum of its proper divisors (27904171).

42876981 is a wasteful number, since it uses less digits than its factorization.

42876981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680600 (or 680597 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 42876981 is about 6548.0516949700. The cubic root of 42876981 is about 350.0053903932.

The spelling of 42876981 in words is "forty-two million, eight hundred seventy-six thousand, nine hundred eighty-one".