139736041 has 3 divisors (see below), whose sum is σ = 139747863. Its totient is φ = 139724220.

The previous prime is 139736021. The next prime is 139736057. The reversal of 139736041 is 140637931.

The square root of 139736041 is 11821.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 19175641 + 120560400 = 4379^2 + 10980^2 .

It is a de Polignac number, because none of the positive numbers 2^k-139736041 is a prime.

It is a super-2 number, since 2×139736041² = 39052322308707362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139735988 and 139736006.

It is not an unprimeable number, because it can be changed into a prime (139736011) 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 2 ways as a sum of consecutive naturals, for example, 5911 + ... + 17731.

It is an arithmetic number, because the mean of its divisors is an integer number (46582621).

Almost surely, 2^139736041 is an apocalyptic number.

139736041 is the 11821-st square number.

139736041 is the 5911-st centered octagonal number.

It is an amenable number.

139736041 is a deficient number, since it is larger than the sum of its proper divisors (11822).

139736041 is an frugal number, since it uses more digits than its factorization.

139736041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642 (or 11821 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The cubic root of 139736041 is about 518.9228702223.

The spelling of 139736041 in words is "one hundred thirty-nine million, seven hundred thirty-six thousand, forty-one".