139151752 has 8 divisors (see below), whose sum is σ = 260909550. Its totient is φ = 69575872.

The previous prime is 139151743. The next prime is 139151759. The reversal of 139151752 is 257151931.

It can be written as a sum of positive squares in only one way, i.e., 122456356 + 16695396 = 11066^2 + 4086^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (139151759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8696977 + ... + 8696992.

Almost surely, 2^139151752 is an apocalyptic number.

It is an amenable number.

139151752 is a deficient number, since it is larger than the sum of its proper divisors (121757798).

139151752 is a wasteful number, since it uses less digits than its factorization.

139151752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17393975 (or 17393971 counting only the distinct ones).

The product of its digits is 9450, while the sum is 34.

The square root of 139151752 is about 11796.2600852982. The cubic root of 139151752 is about 518.1985891510.

The spelling of 139151752 in words is "one hundred thirty-nine million, one hundred fifty-one thousand, seven hundred fifty-two".