12542545 has 8 divisors (see below), whose sum is σ = 15232896. Its totient is φ = 9912816.

The previous prime is 12542539. The next prime is 12542557. The reversal of 12542545 is 54524521.

12542545 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12542545 is a prime.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 14697 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (1904112).

Almost surely, 2^12542545 is an apocalyptic number.

It is an amenable number.

12542545 is a deficient number, since it is larger than the sum of its proper divisors (2690351).

12542545 is an equidigital number, since it uses as much as digits as its factorization.

12542545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30311.

The product of its digits is 8000, while the sum is 28.

The square root of 12542545 is about 3541.5455665571. The cubic root of 12542545 is about 232.3424453820.

The spelling of 12542545 in words is "twelve million, five hundred forty-two thousand, five hundred forty-five".