421223375 has 8 divisors (see below), whose sum is σ = 525686928. Its totient is φ = 336978600.

The previous prime is 421223371. The next prime is 421223441. The reversal of 421223375 is 573322124.

It is not a de Polignac number, because 421223375 - 2² = 421223371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421223371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684769 + ... + 1685018.

It is an arithmetic number, because the mean of its divisors is an integer number (65710866).

Almost surely, 2^421223375 is an apocalyptic number.

421223375 is a deficient number, since it is larger than the sum of its proper divisors (104463553).

421223375 is an equidigital number, since it uses as much as digits as its factorization.

421223375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369802 (or 3369792 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 421223375 is about 20523.7271225282. The cubic root of 421223375 is about 749.6136528672.

Adding to 421223375 its reverse (573322124), we get a palindrome (994545499).

The spelling of 421223375 in words is "four hundred twenty-one million, two hundred twenty-three thousand, three hundred seventy-five".