20402122430 has 32 divisors (see below), whose sum is σ = 37413978624. Its totient is φ = 8008409376.

The previous prime is 20402122421. The next prime is 20402122451. The reversal of 20402122430 is 3422120402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118319 + ... + 234101.

It is an arithmetic number, because the mean of its divisors is an integer number (1169186832).

Almost surely, 2^20402122430 is an apocalyptic number.

20402122430 is a deficient number, since it is larger than the sum of its proper divisors (17011856194).

20402122430 is a wasteful number, since it uses less digits than its factorization.

20402122430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116120.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20402122430 its reverse (3422120402), we get a palindrome (23824242832).

The spelling of 20402122430 in words is "twenty billion, four hundred two million, one hundred twenty-two thousand, four hundred thirty".