139397342 has 32 divisors (see below), whose sum is σ = 251983872. Its totient is φ = 56542464.

The previous prime is 139397329. The next prime is 139397351. The reversal of 139397342 is 243793931.

It is a self number, because there is not a number n which added to its sum of digits gives 139397342.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 29003 + ... + 33465.

It is an arithmetic number, because the mean of its divisors is an integer number (7874496).

Almost surely, 2^139397342 is an apocalyptic number.

139397342 is a deficient number, since it is larger than the sum of its proper divisors (112586530).

139397342 is a wasteful number, since it uses less digits than its factorization.

139397342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592.

The product of its digits is 122472, while the sum is 41.

The square root of 139397342 is about 11806.6651515151. The cubic root of 139397342 is about 518.5032675400.

The spelling of 139397342 in words is "one hundred thirty-nine million, three hundred ninety-seven thousand, three hundred forty-two".