1249297312 has 12 divisors (see below), whose sum is σ = 2459554146. Its totient is φ = 624648640.

The previous prime is 1249297297. The next prime is 1249297331. The reversal of 1249297312 is 2137929421.

It can be written as a sum of positive squares in only one way, i.e., 722319376 + 526977936 = 26876^2 + 22956^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19520239 + ... + 19520302.

Almost surely, 2^1249297312 is an apocalyptic number.

It is an amenable number.

1249297312 is a deficient number, since it is larger than the sum of its proper divisors (1210256834).

1249297312 is an equidigital number, since it uses as much as digits as its factorization.

1249297312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39040551 (or 39040543 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 1249297312 is about 35345.4001533439. The cubic root of 1249297312 is about 1077.0154544598.

The spelling of 1249297312 in words is "one billion, two hundred forty-nine million, two hundred ninety-seven thousand, three hundred twelve".