139342225 has 12 divisors (see below), whose sum is σ = 188492400. Its totient is φ = 101339600.

The previous prime is 139342213. The next prime is 139342243. The reversal of 139342225 is 522243931.

It is not a de Polignac number, because 139342225 - 2²⁵ = 105787793 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 253075 + ... + 253624.

It is an arithmetic number, because the mean of its divisors is an integer number (15707700).

Almost surely, 2^139342225 is an apocalyptic number.

It is an amenable number.

139342225 is a deficient number, since it is larger than the sum of its proper divisors (49150175).

139342225 is a wasteful number, since it uses less digits than its factorization.

139342225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506720 (or 506715 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 139342225 is about 11804.3307730680. The cubic root of 139342225 is about 518.4349206796.

The spelling of 139342225 in words is "one hundred thirty-nine million, three hundred forty-two thousand, two hundred twenty-five".