421842951 has 16 divisors (see below), whose sum is σ = 626085120. Its totient is φ = 280719000.

The previous prime is 421842937. The next prime is 421842991. The reversal of 421842951 is 159248124.

It is not a de Polignac number, because 421842951 - 2¹³ = 421834759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421842901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1326 + ... + 29076.

It is an arithmetic number, because the mean of its divisors is an integer number (39130320).

Almost surely, 2^421842951 is an apocalyptic number.

421842951 is a deficient number, since it is larger than the sum of its proper divisors (204242169).

421842951 is a wasteful number, since it uses less digits than its factorization.

421842951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28323 (or 28317 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 421842951 is about 20538.8157156152. The cubic root of 421842951 is about 749.9810075191.

The spelling of 421842951 in words is "four hundred twenty-one million, eight hundred forty-two thousand, nine hundred fifty-one".