20401412420 has 48 divisors (see below), whose sum is σ = 44335287360. Its totient is φ = 7876503936.

The previous prime is 20401412399. The next prime is 20401412443. The reversal of 20401412420 is 2421410402.

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

It is a junction number, because it is equal to n+sod(n) for n = 20401412392 and 20401412401.

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 15 ways as a sum of consecutive naturals, for example, 3223379 + ... + 3229701.

It is an arithmetic number, because the mean of its divisors is an integer number (923651820).

Almost surely, 2^20401412420 is an apocalyptic number.

20401412420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20401412420 is an abundant number, since it is smaller than the sum of its proper divisors (23933874940).

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

20401412420 is a wasteful number, since it uses less digits than its factorization.

20401412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11924 (or 11922 counting only the distinct ones).

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

Adding to 20401412420 its reverse (2421410402), we get a palindrome (22822822822).

The spelling of 20401412420 in words is "twenty billion, four hundred one million, four hundred twelve thousand, four hundred twenty".