139173541 has 8 divisors (see below), whose sum is σ = 150047744. Its totient is φ = 128323440.

The previous prime is 139173521. The next prime is 139173569. The reversal of 139173541 is 145371931.

It is a happy number.

139173541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139173541 - 2⁹ = 139173029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139173497 and 139173506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139173521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7036 + ... + 18106.

It is an arithmetic number, because the mean of its divisors is an integer number (18755968).

Almost surely, 2^139173541 is an apocalyptic number.

It is an amenable number.

139173541 is a deficient number, since it is larger than the sum of its proper divisors (10874203).

139173541 is a wasteful number, since it uses less digits than its factorization.

139173541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12051.

The product of its digits is 11340, while the sum is 34.

The square root of 139173541 is about 11797.1836045727. The cubic root of 139173541 is about 518.2256350191.

The spelling of 139173541 in words is "one hundred thirty-nine million, one hundred seventy-three thousand, five hundred forty-one".