1299243952 has 10 divisors (see below), whose sum is σ = 2517285188. Its totient is φ = 649621968.

The previous prime is 1299243949. The next prime is 1299243971. The reversal of 1299243952 is 2593429921.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40601358 + ... + 40601389.

Almost surely, 2^1299243952 is an apocalyptic number.

It is an amenable number.

1299243952 is a deficient number, since it is larger than the sum of its proper divisors (1218041236).

1299243952 is an equidigital number, since it uses as much as digits as its factorization.

1299243952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81202755 (or 81202749 counting only the distinct ones).

The product of its digits is 349920, while the sum is 46.

The square root of 1299243952 is about 36045.0267304659. The cubic root of 1299243952 is about 1091.1812662869.

The spelling of 1299243952 in words is "one billion, two hundred ninety-nine million, two hundred forty-three thousand, nine hundred fifty-two".