139244252 has 12 divisors (see below), whose sum is σ = 278488560. Its totient is φ = 59676096.

The previous prime is 139244249. The next prime is 139244267. The reversal of 139244252 is 252442931.

139244252 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2486477 + ... + 2486532.

It is an arithmetic number, because the mean of its divisors is an integer number (23207380).

Almost surely, 2^139244252 is an apocalyptic number.

It is an amenable number.

139244252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139244252 is a wasteful number, since it uses less digits than its factorization.

139244252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973020 (or 4973018 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 139244252 is about 11800.1801681161. The cubic root of 139244252 is about 518.3133864894.

The spelling of 139244252 in words is "one hundred thirty-nine million, two hundred forty-four thousand, two hundred fifty-two".