139222426 has 24 divisors (see below), whose sum is σ = 250770816. Its totient is φ = 57740760.

The previous prime is 139222423. The next prime is 139222439. The reversal of 139222426 is 624222931.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (139222423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19876 + ... + 25951.

It is an arithmetic number, because the mean of its divisors is an integer number (10448784).

Almost surely, 2^139222426 is an apocalyptic number.

139222426 is a deficient number, since it is larger than the sum of its proper divisors (111548390).

139222426 is a wasteful number, since it uses less digits than its factorization.

139222426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45874 (or 45867 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 139222426 is about 11799.2553154850. The cubic root of 139222426 is about 518.2863038656.

The spelling of 139222426 in words is "one hundred thirty-nine million, two hundred twenty-two thousand, four hundred twenty-six".