12499742 has 4 divisors (see below), whose sum is σ = 18749616. Its totient is φ = 6249870.

The previous prime is 12499733. The next prime is 12499757. The reversal of 12499742 is 24799421.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12499696 and 12499705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3124934 + ... + 3124937.

It is an arithmetic number, because the mean of its divisors is an integer number (4687404).

Almost surely, 2^12499742 is an apocalyptic number.

12499742 is a deficient number, since it is larger than the sum of its proper divisors (6249874).

12499742 is an equidigital number, since it uses as much as digits as its factorization.

12499742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249873.

The product of its digits is 36288, while the sum is 38.

The square root of 12499742 is about 3535.4974190346. The cubic root of 12499742 is about 232.0778449631.

The spelling of 12499742 in words is "twelve million, four hundred ninety-nine thousand, seven hundred forty-two".