421302423 has 8 divisors (see below), whose sum is σ = 565100928. Its totient is φ = 279186104.

The previous prime is 421302397. The next prime is 421302473. The reversal of 421302423 is 324203124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421302423 - 2⁵ = 421302391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421302423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421302473) 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 in 7 ways as a sum of consecutive naturals, for example, 419961 + ... + 420962.

It is an arithmetic number, because the mean of its divisors is an integer number (70637616).

Almost surely, 2^421302423 is an apocalyptic number.

421302423 is a deficient number, since it is larger than the sum of its proper divisors (143798505).

421302423 is a wasteful number, since it uses less digits than its factorization.

421302423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841093.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 421302423 is about 20525.6528032606. The cubic root of 421302423 is about 749.6605414915.

Adding to 421302423 its reverse (324203124), we get a palindrome (745505547).

The spelling of 421302423 in words is "four hundred twenty-one million, three hundred two thousand, four hundred twenty-three".