139542872 has 16 divisors (see below), whose sum is σ = 299020560. Its totient is φ = 59804064.

The previous prime is 139542853. The next prime is 139542889. The reversal of 139542872 is 278245931.

139542872 is nontrivially palindromic in base 16.

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, 1245863 + ... + 1245974.

It is an arithmetic number, because the mean of its divisors is an integer number (18688785).

Almost surely, 2^139542872 is an apocalyptic number.

It is an amenable number.

139542872 is an abundant number, since it is smaller than the sum of its proper divisors (159477688).

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

139542872 is a wasteful number, since it uses less digits than its factorization.

139542872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491850 (or 2491846 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 139542872 is about 11812.8265880779. The cubic root of 139542872 is about 518.6836428984.

The spelling of 139542872 in words is "one hundred thirty-nine million, five hundred forty-two thousand, eight hundred seventy-two".