139055274 has 96 divisors (see below), whose sum is σ = 334803456. Its totient is φ = 41518080.

The previous prime is 139055239. The next prime is 139055297. The reversal of 139055274 is 472550931.

139055274 is a `hidden beast` number, since 1 + 39 + 0 + 552 + 74 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1014934 + ... + 1015070.

It is an arithmetic number, because the mean of its divisors is an integer number (3487536).

Almost surely, 2^139055274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139055274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167401728).

139055274 is an abundant number, since it is smaller than the sum of its proper divisors (195748182).

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

139055274 is a wasteful number, since it uses less digits than its factorization.

139055274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 139055274 is about 11792.1700293033. The cubic root of 139055274 is about 518.0788006910.

The spelling of 139055274 in words is "one hundred thirty-nine million, fifty-five thousand, two hundred seventy-four".