42863977 has 6 divisors (see below), whose sum is σ = 46415022. Its totient is φ = 39566592.

The previous prime is 42863963. The next prime is 42863993. The reversal of 42863977 is 77936824.

It can be written as a sum of positive squares in 3 ways, for example, as 301401 + 42562576 = 549^2 + 6524^2 .

It is not a de Polignac number, because 42863977 - 2¹⁵ = 42831209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42863077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126648 + ... + 126985.

It is an arithmetic number, because the mean of its divisors is an integer number (7735837).

Almost surely, 2^42863977 is an apocalyptic number.

It is an amenable number.

42863977 is a deficient number, since it is larger than the sum of its proper divisors (3551045).

42863977 is a wasteful number, since it uses less digits than its factorization.

42863977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253659 (or 253646 counting only the distinct ones).

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

The square root of 42863977 is about 6547.0586525554. The cubic root of 42863977 is about 349.9700028713.

The spelling of 42863977 in words is "forty-two million, eight hundred sixty-three thousand, nine hundred seventy-seven".