139026492 has 36 divisors (see below), whose sum is σ = 383377176. Its totient is φ = 42129120.

The previous prime is 139026487. The next prime is 139026497. The reversal of 139026492 is 294620931.

139026492 is a `hidden beast` number, since 1 + 3 + 9 + 0 + 2 + 649 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (139026487) and next prime (139026497).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139026497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175143 + ... + 175934.

It is an arithmetic number, because the mean of its divisors is an integer number (10649366).

Almost surely, 2^139026492 is an apocalyptic number.

139026492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139026492 is an abundant number, since it is smaller than the sum of its proper divisors (244350684).

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

139026492 is a wasteful number, since it uses less digits than its factorization.

139026492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351098 (or 351093 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 139026492 is about 11790.9495800805. The cubic root of 139026492 is about 518.0430538197.

The spelling of 139026492 in words is "one hundred thirty-nine million, twenty-six thousand, four hundred ninety-two".