139391342 has 16 divisors (see below), whose sum is σ = 218406240. Its totient is φ = 66636192.

The previous prime is 139391333. The next prime is 139391377. The reversal of 139391342 is 243193931.

It is a congruent number.

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, 5693 + ... + 17640.

It is an arithmetic number, because the mean of its divisors is an integer number (13650390).

Almost surely, 2^139391342 is an apocalyptic number.

139391342 is a deficient number, since it is larger than the sum of its proper divisors (79014898).

139391342 is a wasteful number, since it uses less digits than its factorization.

139391342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23467.

The product of its digits is 17496, while the sum is 35.

The square root of 139391342 is about 11806.4110550158. The cubic root of 139391342 is about 518.4958282201.

The spelling of 139391342 in words is "one hundred thirty-nine million, three hundred ninety-one thousand, three hundred forty-two".