12264139 has 4 divisors (see below), whose sum is σ = 12909640. Its totient is φ = 11618640.

The previous prime is 12264137. The next prime is 12264167. The reversal of 12264139 is 93146221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93146221 = 7 ⋅13306603.

It is a cyclic number.

It is not a de Polignac number, because 12264139 - 2¹ = 12264137 is a prime.

It is a super-2 number, since 2×12264139² = 300818210822642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12264137) 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, 322722 + ... + 322759.

It is an arithmetic number, because the mean of its divisors is an integer number (3227410).

Almost surely, 2^12264139 is an apocalyptic number.

12264139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12264139 is a deficient number, since it is larger than the sum of its proper divisors (645501).

12264139 is an equidigital number, since it uses as much as digits as its factorization.

12264139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645500.

The product of its digits is 2592, while the sum is 28.

The square root of 12264139 is about 3502.0192746471. The cubic root of 12264139 is about 230.6104702425.

It can be divided in two parts, 12264 and 139, that added together give a triangular number (12403 = T₁₅₇).

The spelling of 12264139 in words is "twelve million, two hundred sixty-four thousand, one hundred thirty-nine".