139173542 has 16 divisors (see below), whose sum is σ = 214053840. Its totient is φ = 67828992.

The previous prime is 139173521. The next prime is 139173569. The reversal of 139173542 is 245371931.

139173542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 49634 + ... + 52362.

It is an arithmetic number, because the mean of its divisors is an integer number (13378365).

Almost surely, 2^139173542 is an apocalyptic number.

139173542 is a deficient number, since it is larger than the sum of its proper divisors (74880298).

139173542 is a wasteful number, since it uses less digits than its factorization.

139173542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367.

The product of its digits is 22680, while the sum is 35.

The square root of 139173542 is about 11797.1836469557. The cubic root of 139173542 is about 518.2256362603.

The spelling of 139173542 in words is "one hundred thirty-nine million, one hundred seventy-three thousand, five hundred forty-two".