318952242 has 160 divisors (see below), whose sum is σ = 866832384. Its totient is φ = 85730400.

The previous prime is 318952241. The next prime is 318952253. The reversal of 318952242 is 242259813.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 318952197 and 318952206.

It is not an unprimeable number, because it can be changed into a prime (318952241) 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, 1511517 + ... + 1511727.

Almost surely, 2^318952242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318952242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433416192).

318952242 is an abundant number, since it is smaller than the sum of its proper divisors (547880142).

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

318952242 is a wasteful number, since it uses less digits than its factorization.

318952242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 297 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 318952242 is about 17859.2340821212. The cubic root of 318952242 is about 683.2430453516.

The spelling of 318952242 in words is "three hundred eighteen million, nine hundred fifty-two thousand, two hundred forty-two".