12542422 has 16 divisors (see below), whose sum is σ = 19202112. Its totient is φ = 6143040.

The previous prime is 12542401. The next prime is 12542423. The reversal of 12542422 is 22424521.

It is a junction number, because it is equal to n+sod(n) for n = 12542393 and 12542402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39408 + ... + 39724.

It is an arithmetic number, because the mean of its divisors is an integer number (1200132).

Almost surely, 2^12542422 is an apocalyptic number.

12542422 is a deficient number, since it is larger than the sum of its proper divisors (6659690).

12542422 is a wasteful number, since it uses less digits than its factorization.

12542422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 1280, while the sum is 22.

The square root of 12542422 is about 3541.5282012148. The cubic root of 12542422 is about 232.3416858814.

Adding to 12542422 its reverse (22424521), we get a palindrome (34966943).

The spelling of 12542422 in words is "twelve million, five hundred forty-two thousand, four hundred twenty-two".