12252542 has 4 divisors (see below), whose sum is σ = 18378816. Its totient is φ = 6126270.

The previous prime is 12252523. The next prime is 12252551. The reversal of 12252542 is 24525221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24525221 = 7 ⋅3503603.

It is a super-3 number, since 3×12252542³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3063134 + ... + 3063137.

It is an arithmetic number, because the mean of its divisors is an integer number (4594704).

Almost surely, 2^12252542 is an apocalyptic number.

12252542 is a deficient number, since it is larger than the sum of its proper divisors (6126274).

12252542 is an equidigital number, since it uses as much as digits as its factorization.

12252542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6126273.

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

The square root of 12252542 is about 3500.3631240201. The cubic root of 12252542 is about 230.5377587097.

Adding to 12252542 its reverse (24525221), we get a palindrome (36777763).

The spelling of 12252542 in words is "twelve million, two hundred fifty-two thousand, five hundred forty-two".