20042042420044 has 24 divisors (see below), whose sum is σ = 36286743074400. Its totient is φ = 9674472689280.

The previous prime is 20042042419879. The next prime is 20042042420053. The reversal of 20042042420044 is 44002424024002.

It is a super-2 number, since 2×20042042420044² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20042042419994 and 20042042420021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7761177 + ... + 10015984.

It is an arithmetic number, because the mean of its divisors is an integer number (1511947628100).

Almost surely, 2^{20042042420044} is an apocalyptic number.

It is an amenable number.

20042042420044 is a deficient number, since it is larger than the sum of its proper divisors (16244700654356).

20042042420044 is a wasteful number, since it uses less digits than its factorization.

20042042420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17786913 (or 17786911 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 20042042420044 its reverse (44002424024002), we get a palindrome (64044466444046).

The spelling of 20042042420044 in words is "twenty trillion, forty-two billion, forty-two million, four hundred twenty thousand, forty-four".