450642431 has 2 divisors, whose sum is σ = 450642432. Its totient is φ = 450642430.

The previous prime is 450642419. The next prime is 450642433. The reversal of 450642431 is 134246054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 450642431 - 2¹⁴ = 450626047 is a prime.

It is a super-2 number, since 2×450642431² = 406157201235179522, which contains 22 as substring.

Together with 450642433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 450642394 and 450642403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450642433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225321215 + 225321216.

It is an arithmetic number, because the mean of its divisors is an integer number (225321216).

Almost surely, 2^450642431 is an apocalyptic number.

450642431 is a deficient number, since it is larger than the sum of its proper divisors (1).

450642431 is an equidigital number, since it uses as much as digits as its factorization.

450642431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 450642431 is about 21228.3402789761. The cubic root of 450642431 is about 766.6739263543.

Adding to 450642431 its reverse (134246054), we get a palindrome (584888485).

The spelling of 450642431 in words is "four hundred fifty million, six hundred forty-two thousand, four hundred thirty-one".