139988459442 has 16 divisors (see below), whose sum is σ = 301513605120. Its totient is φ = 43073372112.

The previous prime is 139988459423. The next prime is 139988459459. The reversal of 139988459442 is 244954889931.

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, 897361842 + ... + 897361997.

It is an arithmetic number, because the mean of its divisors is an integer number (18844600320).

Almost surely, 2^139988459442 is an apocalyptic number.

139988459442 is an abundant number, since it is smaller than the sum of its proper divisors (161525145678).

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

139988459442 is a wasteful number, since it uses less digits than its factorization.

139988459442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794723857.

The product of its digits is 89579520, while the sum is 66.

The spelling of 139988459442 in words is "one hundred thirty-nine billion, nine hundred eighty-eight million, four hundred fifty-nine thousand, four hundred forty-two".