421466403 has 4 divisors (see below), whose sum is σ = 561955208. Its totient is φ = 280977600.

The previous prime is 421466393. The next prime is 421466407. The reversal of 421466403 is 304664124.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 421466403 - 2⁴ = 421466387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421466407) 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 3 ways as a sum of consecutive naturals, for example, 70244398 + ... + 70244403.

It is an arithmetic number, because the mean of its divisors is an integer number (140488802).

Almost surely, 2^421466403 is an apocalyptic number.

421466403 is a deficient number, since it is larger than the sum of its proper divisors (140488805).

421466403 is a wasteful number, since it uses less digits than its factorization.

421466403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140488804.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 421466403 is about 20529.6469282840. The cubic root of 421466403 is about 749.7577902321.

The spelling of 421466403 in words is "four hundred twenty-one million, four hundred sixty-six thousand, four hundred three".