20122432423 has 4 divisors (see below), whose sum is σ = 20124800800. Its totient is φ = 20120064048.

The previous prime is 20122432417. The next prime is 20122432427. The reversal of 20122432423 is 32423422102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20122432423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122432427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1171398 + ... + 1188451.

It is an arithmetic number, because the mean of its divisors is an integer number (5031200200).

Almost surely, 2^20122432423 is an apocalyptic number.

20122432423 is a deficient number, since it is larger than the sum of its proper divisors (2368377).

20122432423 is an equidigital number, since it uses as much as digits as its factorization.

20122432423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368376.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20122432423 its reverse (32423422102), we get a palindrome (52545854525).

The spelling of 20122432423 in words is "twenty billion, one hundred twenty-two million, four hundred thirty-two thousand, four hundred twenty-three".