20042400422 has 32 divisors (see below), whose sum is σ = 34234216704. Its totient is φ = 8711128800.

The previous prime is 20042400419. The next prime is 20042400431. The reversal of 20042400422 is 22400424002.

It is a junction number, because it is equal to n+sod(n) for n = 20042400394 and 20042400403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2200097 + ... + 2209187.

It is an arithmetic number, because the mean of its divisors is an integer number (1069819272).

Almost surely, 2^20042400422 is an apocalyptic number.

20042400422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20042400422 is a deficient number, since it is larger than the sum of its proper divisors (14191816282).

20042400422 is a wasteful number, since it uses less digits than its factorization.

20042400422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13484.

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

Adding to 20042400422 its reverse (22400424002), we get a palindrome (42442824424).

The spelling of 20042400422 in words is "twenty billion, forty-two million, four hundred thousand, four hundred twenty-two".