20432421127 has 2 divisors, whose sum is σ = 20432421128. Its totient is φ = 20432421126.

The previous prime is 20432421073. The next prime is 20432421133. The reversal of 20432421127 is 72112423402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20432421127 - 2¹⁹ = 20431896839 is a prime.

It is a super-2 number, since 2×20432421127² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20432421095 and 20432421104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20432424127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216210563 + 10216210564.

It is an arithmetic number, because the mean of its divisors is an integer number (10216210564).

Almost surely, 2^20432421127 is an apocalyptic number.

20432421127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432421127 is an equidigital number, since it uses as much as digits as its factorization.

20432421127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

Adding to 20432421127 its reverse (72112423402), we get a palindrome (92544844529).

The spelling of 20432421127 in words is "twenty billion, four hundred thirty-two million, four hundred twenty-one thousand, one hundred twenty-seven".