20024042040 has 96 divisors (see below), whose sum is σ = 67177468800. Its totient is φ = 5167491840.

The previous prime is 20024041967. The next prime is 20024042041. The reversal of 20024042040 is 4024042002.

20024042040 is a `hidden beast` number, since 2 + 0 + 0 + 240 + 420 + 4 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20024042041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 885975 + ... + 908294.

It is an arithmetic number, because the mean of its divisors is an integer number (699765300).

Almost surely, 2^20024042040 is an apocalyptic number.

20024042040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20024042040 is an abundant number, since it is smaller than the sum of its proper divisors (47153426760).

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

20024042040 is a wasteful number, since it uses less digits than its factorization.

20024042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794317 (or 1794310 counting only the distinct ones).

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

Adding to 20024042040 its reverse (4024042002), we get a palindrome (24048084042).

The spelling of 20024042040 in words is "twenty billion, twenty-four million, forty-two thousand, forty".