42077204638 has 32 divisors (see below), whose sum is σ = 73823256000. Its totient is φ = 17979478272.

The previous prime is 42077204633. The next prime is 42077204707. The reversal of 42077204638 is 83640277024.

It is a super-2 number, since 2×42077204638² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42077204594 and 42077204603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42077204633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140178 + ... + 322186.

It is an arithmetic number, because the mean of its divisors is an integer number (2306976750).

Almost surely, 2^42077204638 is an apocalyptic number.

42077204638 is a deficient number, since it is larger than the sum of its proper divisors (31746051362).

42077204638 is a wasteful number, since it uses less digits than its factorization.

42077204638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182369 (or 182355 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 43.

The spelling of 42077204638 in words is "forty-two billion, seventy-seven million, two hundred four thousand, six hundred thirty-eight".