139243226 has 16 divisors (see below), whose sum is σ = 221584896. Its totient is φ = 65397696.

The previous prime is 139243213. The next prime is 139243231. The reversal of 139243226 is 622342931.

139243226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 139243192 and 139243201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14855 + ... + 22341.

It is an arithmetic number, because the mean of its divisors is an integer number (13849056).

Almost surely, 2^139243226 is an apocalyptic number.

139243226 is a deficient number, since it is larger than the sum of its proper divisors (82341670).

139243226 is a wasteful number, since it uses less digits than its factorization.

139243226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053.

The product of its digits is 15552, while the sum is 32.

The square root of 139243226 is about 11800.1366941235. The cubic root of 139243226 is about 518.3121134487.

The spelling of 139243226 in words is "one hundred thirty-nine million, two hundred forty-three thousand, two hundred twenty-six".