1321256852 has 12 divisors (see below), whose sum is σ = 2313234420. Its totient is φ = 660332736.

The previous prime is 1321256773. The next prime is 1321256861. The reversal of 1321256852 is 2586521231.

It can be written as a sum of positive squares in 2 ways, for example, as 645464836 + 675792016 = 25406^2 + 25996^2 .

It is a congruent number.

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, 63713 + ... + 81864.

It is an arithmetic number, because the mean of its divisors is an integer number (192769535).

Almost surely, 2^1321256852 is an apocalyptic number.

It is an amenable number.

1321256852 is a deficient number, since it is larger than the sum of its proper divisors (991977568).

1321256852 is a wasteful number, since it uses less digits than its factorization.

1321256852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147850 (or 147848 counting only the distinct ones).

The product of its digits is 28800, while the sum is 35.

The square root of 1321256852 is about 36349.0969901592. The cubic root of 1321256852 is about 1097.3093611586.

The spelling of 1321256852 in words is "one billion, three hundred twenty-one million, two hundred fifty-six thousand, eight hundred fifty-two".