42077838 has 16 divisors (see below), whose sum is σ = 91806336. Its totient is φ = 12750840.

The previous prime is 42077807. The next prime is 42077851. The reversal of 42077838 is 83877024.

It is a junction number, because it is equal to n+sod(n) for n = 42077796 and 42077805.

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, 318706 + ... + 318837.

It is an arithmetic number, because the mean of its divisors is an integer number (5737896).

Almost surely, 2^42077838 is an apocalyptic number.

42077838 is an abundant number, since it is smaller than the sum of its proper divisors (49728498).

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

42077838 is a wasteful number, since it uses less digits than its factorization.

42077838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637559.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 42077838 is about 6486.7432506613. The cubic root of 42077838 is about 347.8172676536.

The spelling of 42077838 in words is "forty-two million, seventy-seven thousand, eight hundred thirty-eight".