139541572 has 6 divisors (see below), whose sum is σ = 244197758. Its totient is φ = 69770784.

The previous prime is 139541561. The next prime is 139541609. The reversal of 139541572 is 275145931.

It can be written as a sum of positive squares in only one way, i.e., 112021056 + 27520516 = 10584^2 + 5246^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17442693 + ... + 17442700.

Almost surely, 2^139541572 is an apocalyptic number.

It is an amenable number.

139541572 is a deficient number, since it is larger than the sum of its proper divisors (104656186).

139541572 is a wasteful number, since it uses less digits than its factorization.

139541572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34885397 (or 34885395 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The square root of 139541572 is about 11812.7715630160. The cubic root of 139541572 is about 518.6820321847.

The spelling of 139541572 in words is "one hundred thirty-nine million, five hundred forty-one thousand, five hundred seventy-two".