403233421 has 8 divisors (see below), whose sum is σ = 428545080. Its totient is φ = 378098688.

The previous prime is 403233419. The next prime is 403233431. The reversal of 403233421 is 124332304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45077796 + 358155625 = 6714^2 + 18925^2 .

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 403233421 - 2¹ = 403233419 is a prime.

It is a super-2 number, since 2×403233421² = 325194383622726482, 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 = 403233392 and 403233401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403233431) 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, 39516 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (53568135).

Almost surely, 2^403233421 is an apocalyptic number.

It is an amenable number.

403233421 is a deficient number, since it is larger than the sum of its proper divisors (25311659).

403233421 is a wasteful number, since it uses less digits than its factorization.

403233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88463.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 403233421 is about 20080.6728223932. The cubic root of 403233421 is about 738.7863115655.

Adding to 403233421 its reverse (124332304), we get a palindrome (527565725).

The spelling of 403233421 in words is "four hundred three million, two hundred thirty-three thousand, four hundred twenty-one".