12542272 has 14 divisors (see below), whose sum is σ = 24888698. Its totient is φ = 6271104.

The previous prime is 12542267. The next prime is 12542273. The reversal of 12542272 is 27224521.

It can be written as a sum of positive squares in only one way, i.e., 9388096 + 3154176 = 3064^2 + 1776^2 .

It is a super-3 number, since 3×12542272³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97923 + ... + 98050.

Almost surely, 2^12542272 is an apocalyptic number.

It is an amenable number.

12542272 is a deficient number, since it is larger than the sum of its proper divisors (12346426).

12542272 is an equidigital number, since it uses as much as digits as its factorization.

12542272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195985 (or 195975 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The square root of 12542272 is about 3541.5070238530. The cubic root of 12542272 is about 232.3407596543.

Adding to 12542272 its reverse (27224521), we get a palindrome (39766793).

The spelling of 12542272 in words is "twelve million, five hundred forty-two thousand, two hundred seventy-two".