2315440242 has 80 divisors (see below), whose sum is σ = 5442560640. Its totient is φ = 734886432.

The previous prime is 2315440229. The next prime is 2315440247. The reversal of 2315440242 is 2420445132.

It is a super-2 number, since 2×2315440242² = 10722527028546037128, 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 (2315440247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 277609 + ... + 285827.

It is an arithmetic number, because the mean of its divisors is an integer number (68032008).

Almost surely, 2^2315440242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2315440242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721280320).

2315440242 is an abundant number, since it is smaller than the sum of its proper divisors (3127120398).

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

2315440242 is a wasteful number, since it uses less digits than its factorization.

2315440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8317 (or 8308 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2315440242 is about 48119.0216234703. The cubic root of 2315440242 is about 1322.9533356981.

Adding to 2315440242 its reverse (2420445132), we get a palindrome (4735885374).

The spelling of 2315440242 in words is "two billion, three hundred fifteen million, four hundred forty thousand, two hundred forty-two".