420151423 has 2 divisors, whose sum is σ = 420151424. Its totient is φ = 420151422.

The previous prime is 420151421. The next prime is 420151489. The reversal of 420151423 is 324151024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420151423 - 2¹ = 420151421 is a prime.

Together with 420151421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 420151394 and 420151403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420151421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210075711 + 210075712.

It is an arithmetic number, because the mean of its divisors is an integer number (210075712).

Almost surely, 2^420151423 is an apocalyptic number.

420151423 is a deficient number, since it is larger than the sum of its proper divisors (1).

420151423 is an equidigital number, since it uses as much as digits as its factorization.

420151423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 420151423 is about 20497.5955419166. The cubic root of 420151423 is about 748.9772269180.

The spelling of 420151423 in words is "four hundred twenty million, one hundred fifty-one thousand, four hundred twenty-three".