139150251 has 16 divisors (see below), whose sum is σ = 206888320. Its totient is φ = 92433960.

The previous prime is 139150237. The next prime is 139150307. The reversal of 139150251 is 152051931.

It is a de Polignac number, because none of the positive numbers 2^k-139150251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139150201) 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 15 ways as a sum of consecutive naturals, for example, 1465 + ... + 16746.

It is an arithmetic number, because the mean of its divisors is an integer number (12930520).

Almost surely, 2^139150251 is an apocalyptic number.

139150251 is a deficient number, since it is larger than the sum of its proper divisors (67738069).

139150251 is a wasteful number, since it uses less digits than its factorization.

139150251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18503 (or 18497 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 139150251 is about 11796.1964632673. The cubic root of 139150251 is about 518.1967259121.

The spelling of 139150251 in words is "one hundred thirty-nine million, one hundred fifty thousand, two hundred fifty-one".