421450331 has 4 divisors (see below), whose sum is σ = 421532112. Its totient is φ = 421368552.

The previous prime is 421450327. The next prime is 421450409. The reversal of 421450331 is 133054124.

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

It is a cyclic number.

It is not a de Polignac number, because 421450331 - 2² = 421450327 is a prime.

It is a super-2 number, since 2×421450331² = 355240763000019122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421450297 and 421450306.

It is not an unprimeable number, because it can be changed into a prime (421450531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32600 + ... + 43653.

It is an arithmetic number, because the mean of its divisors is an integer number (105383028).

Almost surely, 2^421450331 is an apocalyptic number.

421450331 is a deficient number, since it is larger than the sum of its proper divisors (81781).

421450331 is an equidigital number, since it uses as much as digits as its factorization.

421450331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81780.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 421450331 is about 20529.2554906407. The cubic root of 421450331 is about 749.7482598083.

It can be divided in two parts, 4214 and 50331, that added together give a palindrome (54545).

The spelling of 421450331 in words is "four hundred twenty-one million, four hundred fifty thousand, three hundred thirty-one".