20042222240 has 48 divisors (see below), whose sum is σ = 47380003272. Its totient is φ = 8011766784.

The previous prime is 20042222237. The next prime is 20042222311. The reversal of 20042222240 is 4222224002.

It can be written as a sum of positive squares in 4 ways, for example, as 10130825104 + 9911397136 = 100652^2 + 99556^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216302 + ... + 294738.

Almost surely, 2^20042222240 is an apocalyptic number.

20042222240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20042222240 is an abundant number, since it is smaller than the sum of its proper divisors (27337781032).

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

20042222240 is a wasteful number, since it uses less digits than its factorization.

20042222240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80049 (or 80041 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20042222240 its reverse (4222224002), we get a palindrome (24264446242).

The spelling of 20042222240 in words is "twenty billion, forty-two million, two hundred twenty-two thousand, two hundred forty".