20423041420144 has 80 divisors (see below), whose sum is σ = 43218083803104. Its totient is φ = 9272193638400.

The previous prime is 20423041420129. The next prime is 20423041420163. The reversal of 20423041420144 is 44102414032402.

It is a happy number.

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, 1227854452 + ... + 1227871084.

Almost surely, 2^{20423041420144} is an apocalyptic number.

It is an amenable number.

20423041420144 is an abundant number, since it is smaller than the sum of its proper divisors (22795042382960).

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

20423041420144 is a wasteful number, since it uses less digits than its factorization.

20423041420144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24506 (or 24500 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 20423041420144 its reverse (44102414032402), we get a palindrome (64525455452546).

The spelling of 20423041420144 in words is "twenty trillion, four hundred twenty-three billion, forty-one million, four hundred twenty thousand, one hundred forty-four".