139426318 has 4 divisors (see below), whose sum is σ = 209139480. Its totient is φ = 69713158.

The previous prime is 139426307. The next prime is 139426319. The reversal of 139426318 is 813624931.

139426318 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139426319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34856578 + ... + 34856581.

It is an arithmetic number, because the mean of its divisors is an integer number (52284870).

Almost surely, 2^139426318 is an apocalyptic number.

139426318 is a deficient number, since it is larger than the sum of its proper divisors (69713162).

139426318 is an equidigital number, since it uses as much as digits as its factorization.

139426318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69713161.

The product of its digits is 31104, while the sum is 37.

The square root of 139426318 is about 11807.8921912423. The cubic root of 139426318 is about 518.5391914908.

The spelling of 139426318 in words is "one hundred thirty-nine million, four hundred twenty-six thousand, three hundred eighteen".