139514321 has 4 divisors (see below), whose sum is σ = 146857200. Its totient is φ = 132171444.

The previous prime is 139514311. The next prime is 139514327. The reversal of 139514321 is 123415931.

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 a de Polignac number, because none of the positive numbers 2^k-139514321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139514327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3671411 + ... + 3671448.

It is an arithmetic number, because the mean of its divisors is an integer number (36714300).

Almost surely, 2^139514321 is an apocalyptic number.

It is an amenable number.

139514321 is a deficient number, since it is larger than the sum of its proper divisors (7342879).

139514321 is an equidigital number, since it uses as much as digits as its factorization.

139514321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342878.

The product of its digits is 3240, while the sum is 29.

The square root of 139514321 is about 11811.6180517319. The cubic root of 139514321 is about 518.6482656064.

The spelling of 139514321 in words is "one hundred thirty-nine million, five hundred fourteen thousand, three hundred twenty-one".