139286942 has 32 divisors (see below), whose sum is σ = 227119680. Its totient is φ = 63866880.

The previous prime is 139286909. The next prime is 139286951. The reversal of 139286942 is 249682931.

139286942 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139286942² = 38801704423422728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139286893 and 139286902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257192 + ... + 257732.

It is an arithmetic number, because the mean of its divisors is an integer number (7097490).

Almost surely, 2^139286942 is an apocalyptic number.

139286942 is a deficient number, since it is larger than the sum of its proper divisors (87832738).

139286942 is a wasteful number, since it uses less digits than its factorization.

139286942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its digits is 186624, while the sum is 44.

The square root of 139286942 is about 11801.9889001812. The cubic root of 139286942 is about 518.3663498669.

The spelling of 139286942 in words is "one hundred thirty-nine million, two hundred eighty-six thousand, nine hundred forty-two".