139426320 has 80 divisors (see below), whose sum is σ = 471523392. Its totient is φ = 33799680.

The previous prime is 139426319. The next prime is 139426327. The reversal of 139426320 is 23624931.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (139426327) 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, 23767 + ... + 29046.

Almost surely, 2^139426320 is an apocalyptic number.

139426320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139426320 is an abundant number, since it is smaller than the sum of its proper divisors (332097072).

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

139426320 is a wasteful number, since it uses less digits than its factorization.

139426320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52840 (or 52834 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 139426320 is about 11807.8922759314. The cubic root of 139426320 is about 518.5391939702.

The spelling of 139426320 in words is "one hundred thirty-nine million, four hundred twenty-six thousand, three hundred twenty".