12361139 has 4 divisors (see below), whose sum is σ = 14127024. Its totient is φ = 10595256.

The previous prime is 12361103. The next prime is 12361177. The reversal of 12361139 is 93116321.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-12361139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12361199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882932 + ... + 882945.

It is an arithmetic number, because the mean of its divisors is an integer number (3531756).

Almost surely, 2^12361139 is an apocalyptic number.

12361139 is a deficient number, since it is larger than the sum of its proper divisors (1765885).

12361139 is an equidigital number, since it uses as much as digits as its factorization.

12361139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1765884.

The product of its digits is 972, while the sum is 26.

The square root of 12361139 is about 3515.8411511330. The cubic root of 12361139 is about 231.2168587520.

The spelling of 12361139 in words is "twelve million, three hundred sixty-one thousand, one hundred thirty-nine".