12542522 has 8 divisors (see below), whose sum is σ = 18940500. Its totient is φ = 6229024.

The previous prime is 12542479. The next prime is 12542539. The reversal of 12542522 is 22524521.

It can be written as a sum of positive squares in 2 ways, for example, as 12313081 + 229441 = 3509^2 + 479^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20747 + ... + 21342.

Almost surely, 2^12542522 is an apocalyptic number.

12542522 is a deficient number, since it is larger than the sum of its proper divisors (6397978).

12542522 is a wasteful number, since it uses less digits than its factorization.

12542522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42240.

The product of its digits is 1600, while the sum is 23.

The square root of 12542522 is about 3541.5423193857. The cubic root of 12542522 is about 232.3423033620.

The spelling of 12542522 in words is "twelve million, five hundred forty-two thousand, five hundred twenty-two".