42398739612 has 18 divisors (see below), whose sum is σ = 107174591888. Its totient is φ = 14132913192.

The previous prime is 42398739589. The next prime is 42398739613. The reversal of 42398739612 is 21693789324.

42398739612 is a `hidden beast` number, since 4 + 239 + 8 + 7 + 396 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42398739613) 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, 588871348 + ... + 588871419.

Almost surely, 2^42398739612 is an apocalyptic number.

It is an amenable number.

42398739612 is an abundant number, since it is smaller than the sum of its proper divisors (64775852276).

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

42398739612 is a wasteful number, since it uses less digits than its factorization.

42398739612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177742777 (or 1177742772 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 42398739612 in words is "forty-two billion, three hundred ninety-eight million, seven hundred thirty-nine thousand, six hundred twelve".