139301280 has 72 divisors (see below), whose sum is σ = 475370532. Its totient is φ = 37146624.

The previous prime is 139301273. The next prime is 139301299. The reversal of 139301280 is 82103931.

It can be written as a sum of positive squares in 2 ways, for example, as 126427536 + 12873744 = 11244^2 + 3588^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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, 46929 + ... + 49808.

Almost surely, 2^139301280 is an apocalyptic number.

139301280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139301280 is an abundant number, since it is smaller than the sum of its proper divisors (336069252).

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

139301280 is a wasteful number, since it uses less digits than its factorization.

139301280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96758 (or 96747 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 139301280 is about 11802.5963245381. The cubic root of 139301280 is about 518.3841358886.

The spelling of 139301280 in words is "one hundred thirty-nine million, three hundred one thousand, two hundred eighty".