233125421 has 4 divisors (see below), whose sum is σ = 245395200. Its totient is φ = 220855644.

The previous prime is 233125411. The next prime is 233125423. The reversal of 233125421 is 124521332.

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 a de Polignac number, because none of the positive numbers 2^k-233125421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233125423) 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, 6134861 + ... + 6134898.

It is an arithmetic number, because the mean of its divisors is an integer number (61348800).

Almost surely, 2^233125421 is an apocalyptic number.

It is an amenable number.

233125421 is a deficient number, since it is larger than the sum of its proper divisors (12269779).

233125421 is a wasteful number, since it uses less digits than its factorization.

233125421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12269778.

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

The square root of 233125421 is about 15268.4452712121. The cubic root of 233125421 is about 615.4553404038.

Adding to 233125421 its reverse (124521332), we get a palindrome (357646753).

The spelling of 233125421 in words is "two hundred thirty-three million, one hundred twenty-five thousand, four hundred twenty-one".