139223541 has 16 divisors (see below), whose sum is σ = 190061568. Its totient is φ = 90610800.

The previous prime is 139223503. The next prime is 139223599. The reversal of 139223541 is 145322931.

It is not a de Polignac number, because 139223541 - 2¹⁴ = 139207157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139223499 and 139223508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139223041) 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 15 ways as a sum of consecutive naturals, for example, 68226 + ... + 70236.

It is an arithmetic number, because the mean of its divisors is an integer number (11878848).

Almost surely, 2^139223541 is an apocalyptic number.

It is an amenable number.

139223541 is a deficient number, since it is larger than the sum of its proper divisors (50838027).

139223541 is a wasteful number, since it uses less digits than its factorization.

139223541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552.

The product of its digits is 6480, while the sum is 30.

The square root of 139223541 is about 11799.3025641349. The cubic root of 139223541 is about 518.2876874734.

The spelling of 139223541 in words is "one hundred thirty-nine million, two hundred twenty-three thousand, five hundred forty-one".