2421315136 has 14 divisors (see below), whose sum is σ = 4804797350. Its totient is φ = 1210657536.

The previous prime is 2421315119. The next prime is 2421315137. The reversal of 2421315136 is 6315131242.

It can be written as a sum of positive squares in only one way, i.e., 1380865600 + 1040449536 = 37160^2 + 32256^2 .

It is not an unprimeable number, because it can be changed into a prime (2421315137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18916461 + ... + 18916588.

Almost surely, 2^2421315136 is an apocalyptic number.

It is an amenable number.

2421315136 is a deficient number, since it is larger than the sum of its proper divisors (2383482214).

2421315136 is an equidigital number, since it uses as much as digits as its factorization.

2421315136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37833061 (or 37833051 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 2421315136 is about 49206.8606598714. The cubic root of 2421315136 is about 1342.8178498753.

Adding to 2421315136 its reverse (6315131242), we get a palindrome (8736446378).

The spelling of 2421315136 in words is "two billion, four hundred twenty-one million, three hundred fifteen thousand, one hundred thirty-six".