139342422 has 32 divisors (see below), whose sum is σ = 284383584. Its totient is φ = 45504000.

The previous prime is 139342391. The next prime is 139342429. The reversal of 139342422 is 224243931.

139342422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139342422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139342429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115422 + ... + 116622.

It is an arithmetic number, because the mean of its divisors is an integer number (8886987).

Almost surely, 2^139342422 is an apocalyptic number.

139342422 is an abundant number, since it is smaller than the sum of its proper divisors (145041162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139342422 is a wasteful number, since it uses less digits than its factorization.

139342422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its digits is 10368, while the sum is 30.

The square root of 139342422 is about 11804.3391174602. The cubic root of 139342422 is about 518.4351649981.

The spelling of 139342422 in words is "one hundred thirty-nine million, three hundred forty-two thousand, four hundred twenty-two".