12398942 has 8 divisors (see below), whose sum is σ = 18625800. Its totient is φ = 6190344.

The previous prime is 12398941. The next prime is 12398957. The reversal of 12398942 is 24989321.

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

It is a junction number, because it is equal to n+sod(n) for n = 12398896 and 12398905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12398941) 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, 2717 + ... + 5672.

It is an arithmetic number, because the mean of its divisors is an integer number (2328225).

Almost surely, 2^12398942 is an apocalyptic number.

12398942 is a deficient number, since it is larger than the sum of its proper divisors (6226858).

12398942 is an equidigital number, since it uses as much as digits as its factorization.

12398942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130.

The product of its digits is 31104, while the sum is 38.

The square root of 12398942 is about 3521.2131432221. The cubic root of 12398942 is about 231.4523223750.

The spelling of 12398942 in words is "twelve million, three hundred ninety-eight thousand, nine hundred forty-two".