20304213242 has 8 divisors (see below), whose sum is σ = 30770302836. Its totient is φ = 10047445632.

The previous prime is 20304213227. The next prime is 20304213271. The reversal of 20304213242 is 24231240302.

It can be written as a sum of positive squares in 2 ways, for example, as 19880718001 + 423495241 = 140999^2 + 20579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20304213242² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52330253 + ... + 52330640.

Almost surely, 2^20304213242 is an apocalyptic number.

20304213242 is a deficient number, since it is larger than the sum of its proper divisors (10466089594).

20304213242 is a wasteful number, since it uses less digits than its factorization.

20304213242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104660992.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20304213242 its reverse (24231240302), we get a palindrome (44535453544).

The spelling of 20304213242 in words is "twenty billion, three hundred four million, two hundred thirteen thousand, two hundred forty-two".