42406231077 has 56 divisors (see below), whose sum is σ = 76937616576. Its totient is φ = 22806665856.

The previous prime is 42406231069. The next prime is 42406231093. The reversal of 42406231077 is 77013260424.

42406231077 is a `hidden beast` number, since 4 + 24 + 0 + 623 + 1 + 0 + 7 + 7 = 666.

It is not a de Polignac number, because 42406231077 - 2³ = 42406231069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42406231027) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 157663 + ... + 331164.

Almost surely, 2^42406231077 is an apocalyptic number.

It is an amenable number.

42406231077 is a deficient number, since it is larger than the sum of its proper divisors (34531385499).

42406231077 is an equidigital number, since it uses as much as digits as its factorization.

42406231077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488869 (or 488854 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 42406231077 in words is "forty-two billion, four hundred six million, two hundred thirty-one thousand, seventy-seven".