232238421 has 40 divisors (see below), whose sum is σ = 361304064. Its totient is φ = 148543200.

The previous prime is 232238417. The next prime is 232238443. The reversal of 232238421 is 124832232.

232238421 is a `hidden beast` number, since 2 + 3 + 2 + 238 + 421 = 666.

It is not a de Polignac number, because 232238421 - 2² = 232238417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232238401) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 201196 + ... + 202346.

Almost surely, 2^232238421 is an apocalyptic number.

It is an amenable number.

232238421 is a deficient number, since it is larger than the sum of its proper divisors (129065643).

232238421 is a wasteful number, since it uses less digits than its factorization.

232238421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263 (or 1254 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 232238421 is about 15239.3707547261. The cubic root of 232238421 is about 614.6737829725.

The spelling of 232238421 in words is "two hundred thirty-two million, two hundred thirty-eight thousand, four hundred twenty-one".