12124739 has 4 divisors (see below), whose sum is σ = 13227000. Its totient is φ = 11022480.

The previous prime is 12124727. The next prime is 12124769. The reversal of 12124739 is 93742121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12124739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12124769) 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, 551114 + ... + 551135.

It is an arithmetic number, because the mean of its divisors is an integer number (3306750).

Almost surely, 2^12124739 is an apocalyptic number.

12124739 is a deficient number, since it is larger than the sum of its proper divisors (1102261).

12124739 is a wasteful number, since it uses less digits than its factorization.

12124739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102260.

The product of its digits is 3024, while the sum is 29.

The square root of 12124739 is about 3482.0595916785. The cubic root of 12124739 is about 229.7333961904.

The spelling of 12124739 in words is "twelve million, one hundred twenty-four thousand, seven hundred thirty-nine".