42738940836 has 36 divisors (see below), whose sum is σ = 108241952364. Its totient is φ = 14218963200.

The previous prime is 42738940787. The next prime is 42738940843. The reversal of 42738940836 is 63804983724.

It can be written as a sum of positive squares in 2 ways, for example, as 31840833600 + 10898107236 = 178440^2 + 104394^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1120585 + ... + 1158096.

It is an arithmetic number, because the mean of its divisors is an integer number (3006720899).

Almost surely, 2^42738940836 is an apocalyptic number.

It is an amenable number.

42738940836 is an abundant number, since it is smaller than the sum of its proper divisors (65503011528).

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

42738940836 is a wasteful number, since it uses less digits than its factorization.

42738940836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279212 (or 2279207 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 42738940836 in words is "forty-two billion, seven hundred thirty-eight million, nine hundred forty thousand, eight hundred thirty-six".