401421233 has 4 divisors (see below), whose sum is σ = 406920228. Its totient is φ = 395922240.

The previous prime is 401421217. The next prime is 401421247. The reversal of 401421233 is 332124104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 326633329 + 74787904 = 18073^2 + 8648^2 .

It is a cyclic number.

It is not a de Polignac number, because 401421233 - 2⁴ = 401421217 is a prime.

It is a super-2 number, since 2×401421233² = 322278012606480578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401421133) 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, 2749388 + ... + 2749533.

It is an arithmetic number, because the mean of its divisors is an integer number (101730057).

Almost surely, 2^401421233 is an apocalyptic number.

It is an amenable number.

401421233 is a deficient number, since it is larger than the sum of its proper divisors (5498995).

401421233 is an equidigital number, since it uses as much as digits as its factorization.

401421233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498994.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 401421233 is about 20035.4993199571. The cubic root of 401421233 is about 737.6779127605.

Adding to 401421233 its reverse (332124104), we get a palindrome (733545337).

The spelling of 401421233 in words is "four hundred one million, four hundred twenty-one thousand, two hundred thirty-three".