999932742 has 32 divisors (see below), whose sum is σ = 2237004000. Its totient is φ = 331071264.

The previous prime is 999932729. The next prime is 999932743. The reversal of 999932742 is 247239999.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999932743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54093 + ... + 70184.

It is an arithmetic number, because the mean of its divisors is an integer number (69906375).

Almost surely, 2^999932742 is an apocalyptic number.

999932742 is an abundant number, since it is smaller than the sum of its proper divisors (1237071258).

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

999932742 is a wasteful number, since it uses less digits than its factorization.

999932742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124437 (or 124431 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 999932742 is about 31621.7131414476. The cubic root of 999932742 is about 999.9775801640.

The spelling of 999932742 in words is "nine hundred ninety-nine million, nine hundred thirty-two thousand, seven hundred forty-two".