4233123421 has 4 divisors (see below), whose sum is σ = 4284124992. Its totient is φ = 4182121852.

The previous prime is 4233123383. The next prime is 4233123451. The reversal of 4233123421 is 1243213324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4233123421 - 2²⁹ = 3696252509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4233123451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25500661 + ... + 25500826.

It is an arithmetic number, because the mean of its divisors is an integer number (1071031248).

Almost surely, 2^4233123421 is an apocalyptic number.

It is an amenable number.

4233123421 is a deficient number, since it is larger than the sum of its proper divisors (51001571).

4233123421 is an equidigital number, since it uses as much as digits as its factorization.

4233123421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51001570.

The product of its digits is 3456, while the sum is 25.

The square root of 4233123421 is about 65062.4578462880. The cubic root of 4233123421 is about 1617.6589950148.

Adding to 4233123421 its reverse (1243213324), we get a palindrome (5476336745).

The spelling of 4233123421 in words is "four billion, two hundred thirty-three million, one hundred twenty-three thousand, four hundred twenty-one".