12542556 has 96 divisors (see below), whose sum is σ = 33784128. Its totient is φ = 3594240.

The previous prime is 12542539. The next prime is 12542557. The reversal of 12542556 is 65524521.

It is a super-2 number, since 2×12542556² = 314631422026272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236626 + ... + 236678.

It is an arithmetic number, because the mean of its divisors is an integer number (351918).

Almost surely, 2^12542556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12542556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16892064).

12542556 is an abundant number, since it is smaller than the sum of its proper divisors (21241572).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12542556 is a wasteful number, since it uses less digits than its factorization.

12542556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 12542556 is about 3541.5471195510. The cubic root of 12542556 is about 232.3425133046.

The spelling of 12542556 in words is "twelve million, five hundred forty-two thousand, five hundred fifty-six".