20320024242 has 64 divisors (see below), whose sum is σ = 47224961280. Its totient is φ = 5709090816.

The previous prime is 20320024189. The next prime is 20320024271. The reversal of 20320024242 is 24242002302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 623734 + ... + 655502.

It is an arithmetic number, because the mean of its divisors is an integer number (737890020).

Almost surely, 2^20320024242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320024242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23612480640).

20320024242 is an abundant number, since it is smaller than the sum of its proper divisors (26904937038).

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

20320024242 is a wasteful number, since it uses less digits than its factorization.

20320024242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32035.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20320024242 its reverse (24242002302), we get a palindrome (44562026544).

The spelling of 20320024242 in words is "twenty billion, three hundred twenty million, twenty-four thousand, two hundred forty-two".