139226602 has 4 divisors (see below), whose sum is σ = 208839906. Its totient is φ = 69613300.

The previous prime is 139226579. The next prime is 139226621. The reversal of 139226602 is 206622931.

139226602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 206622931 = 1747 ⋅118273.

It can be written as a sum of positive squares in only one way, i.e., 139216401 + 10201 = 11799^2 + 101^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34806649 + ... + 34806652.

Almost surely, 2^139226602 is an apocalyptic number.

139226602 is a deficient number, since it is larger than the sum of its proper divisors (69613304).

139226602 is an equidigital number, since it uses as much as digits as its factorization.

139226602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69613303.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 139226602 is about 11799.4322744783. The cubic root of 139226602 is about 518.2914858420.

The spelling of 139226602 in words is "one hundred thirty-nine million, two hundred twenty-six thousand, six hundred two".