139915142 has 8 divisors (see below), whose sum is σ = 209979000. Its totient is φ = 69922144.

The previous prime is 139915133. The next prime is 139915159. The reversal of 139915142 is 241519931.

It is a happy number.

139915142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12467 + ... + 20862.

It is an arithmetic number, because the mean of its divisors is an integer number (26247375).

Almost surely, 2^139915142 is an apocalyptic number.

139915142 is a deficient number, since it is larger than the sum of its proper divisors (70063858).

139915142 is a wasteful number, since it uses less digits than its factorization.

139915142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35430.

The product of its digits is 9720, while the sum is 35.

The square root of 139915142 is about 11828.5731176672. The cubic root of 139915142 is about 519.1444783471.

The spelling of 139915142 in words is "one hundred thirty-nine million, nine hundred fifteen thousand, one hundred forty-two".