139144101 has 4 divisors (see below), whose sum is σ = 185525472. Its totient is φ = 92762732.

The previous prime is 139144069. The next prime is 139144147. The reversal of 139144101 is 101441931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139144101 - 2⁵ = 139144069 is a prime.

It is a super-2 number, since 2×139144101² = 38722161686196402, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139144171) 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 3 ways as a sum of consecutive naturals, for example, 23190681 + ... + 23190686.

It is an arithmetic number, because the mean of its divisors is an integer number (46381368).

Almost surely, 2^139144101 is an apocalyptic number.

It is an amenable number.

139144101 is a deficient number, since it is larger than the sum of its proper divisors (46381371).

139144101 is an equidigital number, since it uses as much as digits as its factorization.

139144101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46381370.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 139144101 is about 11795.9357831416. The cubic root of 139144101 is about 518.1890915821.

The spelling of 139144101 in words is "one hundred thirty-nine million, one hundred forty-four thousand, one hundred one".