1299021052 has 12 divisors (see below), whose sum is σ = 2598042160. Its totient is φ = 556723296.

The previous prime is 1299021019. The next prime is 1299021083. The reversal of 1299021052 is 2501209921.

1299021052 is an admirable number.

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, 23196777 + ... + 23196832.

Almost surely, 2^1299021052 is an apocalyptic number.

It is an amenable number.

1299021052 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299021052 is a wasteful number, since it uses less digits than its factorization.

1299021052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46393620 (or 46393618 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1299021052 is about 36041.9346317592. The cubic root of 1299021052 is about 1091.1188612206.

The spelling of 1299021052 in words is "one billion, two hundred ninety-nine million, twenty-one thousand, fifty-two".