22402020042 has 64 divisors (see below), whose sum is σ = 49997952000. Its totient is φ = 7435072944.

The previous prime is 22402020031. The next prime is 22402020049. The reversal of 22402020042 is 24002020422.

22402020042 is a `hidden beast` number, since 22 + 402 + 0 + 200 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22402019997 and 22402020024.

It is not an unprimeable number, because it can be changed into a prime (22402020049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21983809 + ... + 21984827.

It is an arithmetic number, because the mean of its divisors is an integer number (781218000).

Almost surely, 2^22402020042 is an apocalyptic number.

22402020042 is an abundant number, since it is smaller than the sum of its proper divisors (27595931958).

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

22402020042 is a wasteful number, since it uses less digits than its factorization.

22402020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2386 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22402020042 its reverse (24002020422), we get a palindrome (46404040464).

The spelling of 22402020042 in words is "twenty-two billion, four hundred two million, twenty thousand, forty-two".