12492491 has 8 divisors (see below), whose sum is σ = 13690944. Its totient is φ = 11304520.

The previous prime is 12492479. The next prime is 12492497. The reversal of 12492491 is 19429421.

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 12492491 - 2²² = 8298187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12492497) 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, 5 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (1711368).

Almost surely, 2^12492491 is an apocalyptic number.

12492491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12492491 is a deficient number, since it is larger than the sum of its proper divisors (1198453).

12492491 is a wasteful number, since it uses less digits than its factorization.

12492491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241.

The product of its digits is 5184, while the sum is 32.

The square root of 12492491 is about 3534.4718134397. The cubic root of 12492491 is about 232.0329607847.

The spelling of 12492491 in words is "twelve million, four hundred ninety-two thousand, four hundred ninety-one".