139725226 has 8 divisors (see below), whose sum is σ = 210843360. Its totient is φ = 69444108.

The previous prime is 139725211. The next prime is 139725233. The reversal of 139725226 is 622527931.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208836 + ... + 209503.

It is an arithmetic number, because the mean of its divisors is an integer number (26355420).

Almost surely, 2^139725226 is an apocalyptic number.

139725226 is a deficient number, since it is larger than the sum of its proper divisors (71118134).

139725226 is a wasteful number, since it uses less digits than its factorization.

139725226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418508.

The product of its digits is 45360, while the sum is 37.

The square root of 139725226 is about 11820.5425425401. The cubic root of 139725226 is about 518.9094823719.

The spelling of 139725226 in words is "one hundred thirty-nine million, seven hundred twenty-five thousand, two hundred twenty-six".