12517442 has 32 divisors (see below), whose sum is σ = 22291200. Its totient is φ = 5268480.

The previous prime is 12517403. The next prime is 12517481. The reversal of 12517442 is 24471521.

It is an interprime number because it is at equal distance from previous prime (12517403) and next prime (12517481).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48578 + ... + 48834.

It is an arithmetic number, because the mean of its divisors is an integer number (696600).

Almost surely, 2^12517442 is an apocalyptic number.

12517442 is a deficient number, since it is larger than the sum of its proper divisors (9773758).

12517442 is an equidigital number, since it uses as much as digits as its factorization.

12517442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 337 counting only the distinct ones).

The product of its digits is 2240, while the sum is 26.

The square root of 12517442 is about 3537.9997173544. Note that the first 3 decimals coincide. The cubic root of 12517442 is about 232.1873363022.

Adding to 12517442 its reverse (24471521), we get a palindrome (36988963).

The spelling of 12517442 in words is "twelve million, five hundred seventeen thousand, four hundred forty-two".