420114551 has 2 divisors, whose sum is σ = 420114552. Its totient is φ = 420114550.

The previous prime is 420114493. The next prime is 420114553. The reversal of 420114551 is 155411024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420114551 - 2¹⁴ = 420098167 is a prime.

Together with 420114553, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_22350227 and since 420114551 and 22350227 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420114553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210057275 + 210057276.

It is an arithmetic number, because the mean of its divisors is an integer number (210057276).

Almost surely, 2^420114551 is an apocalyptic number.

420114551 is a deficient number, since it is larger than the sum of its proper divisors (1).

420114551 is an equidigital number, since it uses as much as digits as its factorization.

420114551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 420114551 is about 20496.6960996157. The cubic root of 420114551 is about 748.9553164871.

Adding to 420114551 its reverse (155411024), we get a palindrome (575525575).

The spelling of 420114551 in words is "four hundred twenty million, one hundred fourteen thousand, five hundred fifty-one".