421401233 has 8 divisors (see below), whose sum is σ = 475562880. Its totient is φ = 369881680.

The previous prime is 421401221. The next prime is 421401283. The reversal of 421401233 is 332104124.

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 421401233 - 2⁴ = 421401217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421401283) 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, 660185 + ... + 660822.

It is an arithmetic number, because the mean of its divisors is an integer number (59445360).

Almost surely, 2^421401233 is an apocalyptic number.

It is an amenable number.

421401233 is a deficient number, since it is larger than the sum of its proper divisors (54161647).

421401233 is a wasteful number, since it uses less digits than its factorization.

421401233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321047.

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

The square root of 421401233 is about 20528.0596501472. The cubic root of 421401233 is about 749.7191440249.

Adding to 421401233 its reverse (332104124), we get a palindrome (753505357).

The spelling of 421401233 in words is "four hundred twenty-one million, four hundred one thousand, two hundred thirty-three".