1249249994 has 12 divisors (see below), whose sum is σ = 1940722134. Its totient is φ = 603085392.

The previous prime is 1249249987. The next prime is 1249250003. The reversal of 1249249994 is 4999429421.

It can be written as a sum of positive squares in 3 ways, for example, as 1031244769 + 218005225 = 32113^2 + 14765^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 369677 + ... + 373040.

Almost surely, 2^1249249994 is an apocalyptic number.

1249249994 is a deficient number, since it is larger than the sum of its proper divisors (691472140).

1249249994 is an equidigital number, since it uses as much as digits as its factorization.

1249249994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742777 (or 742748 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 53.

The square root of 1249249994 is about 35344.7307812636. The cubic root of 1249249994 is about 1077.0018567196.

The spelling of 1249249994 in words is "one billion, two hundred forty-nine million, two hundred forty-nine thousand, nine hundred ninety-four".