20002400442 has 32 divisors (see below), whose sum is σ = 46789243200. Its totient is φ = 6316547184.

The previous prime is 20002400441. The next prime is 20002400443. The reversal of 20002400442 is 24400420002.

20002400442 is a `hidden beast` number, since 200 + 0 + 24 + 0 + 0 + 442 = 666.

It is an interprime number because it is at equal distance from previous prime (20002400441) and next prime (20002400443).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20002400441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9746733 + ... + 9748784.

It is an arithmetic number, because the mean of its divisors is an integer number (1462163850).

Almost surely, 2^20002400442 is an apocalyptic number.

20002400442 is an abundant number, since it is smaller than the sum of its proper divisors (26786842758).

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

20002400442 is a wasteful number, since it uses less digits than its factorization.

20002400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19495547 (or 19495541 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20002400442 its reverse (24400420002), we get a palindrome (44402820444).

The spelling of 20002400442 in words is "twenty billion, two million, four hundred thousand, four hundred forty-two".