20122434423 has 192 divisors, whose sum is σ = 38853534720. Its totient is φ = 10193589504.

The previous prime is 20122434401. The next prime is 20122434467. The reversal of 20122434423 is 32443422102.

20122434423 is a `hidden beast` number, since 201 + 2 + 2 + 4 + 34 + 423 = 666.

It is not a de Polignac number, because 20122434423 - 2⁵ = 20122434391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122434223) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 65545236 + ... + 65545542.

It is an arithmetic number, because the mean of its divisors is an integer number (202362160).

Almost surely, 2^20122434423 is an apocalyptic number.

20122434423 is a deficient number, since it is larger than the sum of its proper divisors (18731100297).

20122434423 is a wasteful number, since it uses less digits than its factorization.

20122434423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20122434423 its reverse (32443422102), we get a palindrome (52565856525).

The spelling of 20122434423 in words is "twenty billion, one hundred twenty-two million, four hundred thirty-four thousand, four hundred twenty-three".