12472138 has 8 divisors (see below), whose sum is σ = 21380832. Its totient is φ = 5345196.

The previous prime is 12472133. The next prime is 12472153. The reversal of 12472138 is 83127421.

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 (12472133) 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, 445420 + ... + 445447.

It is an arithmetic number, because the mean of its divisors is an integer number (2672604).

Almost surely, 2^12472138 is an apocalyptic number.

12472138 is a deficient number, since it is larger than the sum of its proper divisors (8908694).

12472138 is an equidigital number, since it uses as much as digits as its factorization.

12472138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890876.

The product of its digits is 2688, while the sum is 28.

The square root of 12472138 is about 3531.5914259721. The cubic root of 12472138 is about 231.9068814764.

Adding to 12472138 its reverse (83127421), we get a palindrome (95599559).

The spelling of 12472138 in words is "twelve million, four hundred seventy-two thousand, one hundred thirty-eight".