999942975 has 120 divisors (see below), whose sum is σ = 2026620288. Its totient is φ = 485222400.

The previous prime is 999942947. The next prime is 999943003. The reversal of 999942975 is 579249999.

It is an interprime number because it is at equal distance from previous prime (999942947) and next prime (999943003).

It is not a de Polignac number, because 999942975 - 2⁵ = 999942943 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1066707 + ... + 1067643.

Almost surely, 2^999942975 is an apocalyptic number.

999942975 is an abundant number, since it is smaller than the sum of its proper divisors (1026677313).

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

999942975 is a wasteful number, since it uses less digits than its factorization.

999942975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 993 counting only the distinct ones).

The product of its digits is 16533720, while the sum is 63.

The square root of 999942975 is about 31621.8749444115. The cubic root of 999942975 is about 999.9809913053.

The spelling of 999942975 in words is "nine hundred ninety-nine million, nine hundred forty-two thousand, nine hundred seventy-five".