12531242 has 8 divisors (see below), whose sum is σ = 18813600. Its totient is φ = 6260044.

The previous prime is 12531221. The next prime is 12531247. The reversal of 12531242 is 24213521.

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

It is not an unprimeable number, because it can be changed into a prime (12531247) 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, 1109 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (2351700).

Almost surely, 2^12531242 is an apocalyptic number.

12531242 is a deficient number, since it is larger than the sum of its proper divisors (6282358).

12531242 is a wasteful number, since it uses less digits than its factorization.

12531242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580.

The product of its digits is 480, while the sum is 20.

The square root of 12531242 is about 3539.9494346671. The cubic root of 12531242 is about 232.2726308446.

Adding to 12531242 its reverse (24213521), we get a palindrome (36744763).

The spelling of 12531242 in words is "twelve million, five hundred thirty-one thousand, two hundred forty-two".