20402424402 has 48 divisors (see below), whose sum is σ = 41548151232. Its totient is φ = 6678246400.

The previous prime is 20402424401. The next prime is 20402424407. The reversal of 20402424402 is 20442420402.

It is not an unprimeable number, because it can be changed into a prime (20402424401) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 45439474 + ... + 45439922.

It is an arithmetic number, because the mean of its divisors is an integer number (865586484).

Almost surely, 2^20402424402 is an apocalyptic number.

20402424402 is an abundant number, since it is smaller than the sum of its proper divisors (21145726830).

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

20402424402 is a wasteful number, since it uses less digits than its factorization.

20402424402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20402424402 its reverse (20442420402), we get a palindrome (40844844804).

The spelling of 20402424402 in words is "twenty billion, four hundred two million, four hundred twenty-four thousand, four hundred two".