139712292 has 18 divisors (see below), whose sum is σ = 353161718. Its totient is φ = 46570752.

The previous prime is 139712267. The next prime is 139712299. The reversal of 139712292 is 292217931.

It can be written as a sum of positive squares in only one way, i.e., 136048896 + 3663396 = 11664^2 + 1914^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 3880897 = 139712292 / (1 + 3 + 9 + 7 + 1 + 2 + 2 + 9 + 2).

It is not an unprimeable number, because it can be changed into a prime (139712299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1940413 + ... + 1940484.

Almost surely, 2^139712292 is an apocalyptic number.

139712292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

139712292 is an abundant number, since it is smaller than the sum of its proper divisors (213449426).

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

139712292 is a wasteful number, since it uses less digits than its factorization.

139712292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880907 (or 3880902 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 139712292 is about 11819.9954314712. The cubic root of 139712292 is about 518.8934705117.

It can be divided in two parts, 1397 and 12292, that added together give a square (13689 = 117²).

The spelling of 139712292 in words is "one hundred thirty-nine million, seven hundred twelve thousand, two hundred ninety-two".