304242642 has 160 divisors (see below), whose sum is σ = 803525184. Its totient is φ = 85726080.

The previous prime is 304242641. The next prime is 304242647. The reversal of 304242642 is 246242403.

It is a super-2 number, since 2×304242642² = 185127170422280328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (304242641) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3665533 + ... + 3665615.

Almost surely, 2^304242642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 304242642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401762592).

304242642 is an abundant number, since it is smaller than the sum of its proper divisors (499282542).

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

304242642 is a wasteful number, since it uses less digits than its factorization.

304242642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 304242642 is about 17442.5526228244. The cubic root of 304242642 is about 672.5739277407.

The spelling of 304242642 in words is "three hundred four million, two hundred forty-two thousand, six hundred forty-two".