1299424068 has 18 divisors (see below), whose sum is σ = 3284655374. Its totient is φ = 433141344.

The previous prime is 1299424067. The next prime is 1299424069. The reversal of 1299424068 is 8604249921.

It is an interprime number because it is at equal distance from previous prime (1299424067) and next prime (1299424069).

It can be written as a sum of positive squares in only one way, i.e., 1002482244 + 296941824 = 31662^2 + 17232^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1299424067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18047521 + ... + 18047592.

Almost surely, 2^1299424068 is an apocalyptic number.

1299424068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1299424068 is an abundant number, since it is smaller than the sum of its proper divisors (1985231306).

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

1299424068 is a wasteful number, since it uses less digits than its factorization.

1299424068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36095123 (or 36095118 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1299424068 is about 36047.5251300280. The cubic root of 1299424068 is about 1091.2316879502.

The spelling of 1299424068 in words is "one billion, two hundred ninety-nine million, four hundred twenty-four thousand, sixty-eight".