1299649124 has 12 divisors (see below), whose sum is σ = 2335856124. Its totient is φ = 632261664.

The previous prime is 1299649097. The next prime is 1299649139. The reversal of 1299649124 is 4219469921.

It can be written as a sum of positive squares in 2 ways, for example, as 983449600 + 316199524 = 31360^2 + 17782^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4390559 + ... + 4390854.

It is an arithmetic number, because the mean of its divisors is an integer number (194654677).

Almost surely, 2^1299649124 is an apocalyptic number.

It is an amenable number.

1299649124 is a deficient number, since it is larger than the sum of its proper divisors (1036207000).

1299649124 is a wasteful number, since it uses less digits than its factorization.

1299649124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781454 (or 8781452 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 1299649124 is about 36050.6466516206. The cubic root of 1299649124 is about 1091.2946835670.

The spelling of 1299649124 in words is "one billion, two hundred ninety-nine million, six hundred forty-nine thousand, one hundred twenty-four".