139521314 has 8 divisors (see below), whose sum is σ = 209528748. Its totient is φ = 69678400.

The previous prime is 139521307. The next prime is 139521337. The reversal of 139521314 is 413125931.

It can be written as a sum of positive squares in 2 ways, for example, as 120450625 + 19070689 = 10975^2 + 4367^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38987 + ... + 42414.

Almost surely, 2^139521314 is an apocalyptic number.

139521314 is a deficient number, since it is larger than the sum of its proper divisors (70007434).

139521314 is an equidigital number, since it uses as much as digits as its factorization.

139521314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82260.

The product of its digits is 3240, while the sum is 29.

The square root of 139521314 is about 11811.9140701243. The cubic root of 139521314 is about 518.6569310172.

The spelling of 139521314 in words is "one hundred thirty-nine million, five hundred twenty-one thousand, three hundred fourteen".