12513542 has 4 divisors (see below), whose sum is σ = 18770316. Its totient is φ = 6256770.

The previous prime is 12513517. The next prime is 12513563. The reversal of 12513542 is 24531521.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3128384 + ... + 3128387.

It is an arithmetic number, because the mean of its divisors is an integer number (4692579).

Almost surely, 2^12513542 is an apocalyptic number.

12513542 is a deficient number, since it is larger than the sum of its proper divisors (6256774).

12513542 is an equidigital number, since it uses as much as digits as its factorization.

12513542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256773.

The product of its digits is 1200, while the sum is 23.

The square root of 12513542 is about 3537.4485155264. The cubic root of 12513542 is about 232.1632199619.

The spelling of 12513542 in words is "twelve million, five hundred thirteen thousand, five hundred forty-two".