20401124042 has 16 divisors (see below), whose sum is σ = 32964745632. Its totient is φ = 9413308080.

The previous prime is 20401123997. The next prime is 20401124053. The reversal of 20401124042 is 24042110402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10328 + ... + 202259.

It is an arithmetic number, because the mean of its divisors is an integer number (2060296602).

Almost surely, 2^20401124042 is an apocalyptic number.

20401124042 is a deficient number, since it is larger than the sum of its proper divisors (12563621590).

20401124042 is a wasteful number, since it uses less digits than its factorization.

20401124042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216293.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20401124042 its reverse (24042110402), we get a palindrome (44443234444).

The spelling of 20401124042 in words is "twenty billion, four hundred one million, one hundred twenty-four thousand, forty-two".