421423151 has 2 divisors, whose sum is σ = 421423152. Its totient is φ = 421423150.

The previous prime is 421423147. The next prime is 421423169. The reversal of 421423151 is 151324124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421423151 - 2² = 421423147 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421423351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210711575 + 210711576.

It is an arithmetic number, because the mean of its divisors is an integer number (210711576).

Almost surely, 2^421423151 is an apocalyptic number.

421423151 is a deficient number, since it is larger than the sum of its proper divisors (1).

421423151 is an equidigital number, since it uses as much as digits as its factorization.

421423151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 421423151 is about 20528.5934978507. The cubic root of 421423151 is about 749.7321419771.

Adding to 421423151 its reverse (151324124), we get a palindrome (572747275).

The spelling of 421423151 in words is "four hundred twenty-one million, four hundred twenty-three thousand, one hundred fifty-one".