12742621 has 8 divisors (see below), whose sum is σ = 13466880. Its totient is φ = 12032592.

The previous prime is 12742589. The next prime is 12742627. The reversal of 12742621 is 12624721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12742621 - 2⁵ = 12742589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12742627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (1683360).

Almost surely, 2^12742621 is an apocalyptic number.

It is an amenable number.

12742621 is a deficient number, since it is larger than the sum of its proper divisors (724259).

12742621 is an equidigital number, since it uses as much as digits as its factorization.

12742621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7115.

The product of its digits is 1344, while the sum is 25.

The square root of 12742621 is about 3569.6807980546. The cubic root of 12742621 is about 233.5713595982.

The spelling of 12742621 in words is "twelve million, seven hundred forty-two thousand, six hundred twenty-one".