12542536 has 16 divisors (see below), whose sum is σ = 23597100. Its totient is φ = 6249984.

The previous prime is 12542479. The next prime is 12542539. The reversal of 12542536 is 63524521.

12542536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12542536 is a nontrivial binomial coefficient, being equal to C(5009, 2).

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 1612900 = 3306^2 + 1270^2 .

It is a super-2 number, since 2×12542536² = 314630418622592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12542539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 5008.

Almost surely, 2^12542536 is an apocalyptic number.

12542536 is the 5008-th triangular number.

12542536 is the 1670-th centered nonagonal number.

It is an amenable number.

12542536 is a deficient number, since it is larger than the sum of its proper divisors (11054564).

12542536 is a wasteful number, since it uses less digits than its factorization.

12542536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5328 (or 5324 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 12542536 is about 3541.5442959252. The cubic root of 12542536 is about 232.3423898090.

The spelling of 12542536 in words is "twelve million, five hundred forty-two thousand, five hundred thirty-six".