232142213421 has 6 divisors (see below), whose sum is σ = 335316530510. Its totient is φ = 154761475608.

The previous prime is 232142213417. The next prime is 232142213441. The reversal of 232142213421 is 124312241232.

232142213421 is a `hidden beast` number, since 2 + 3 + 2 + 14 + 221 + 3 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 191481507396 + 40660706025 = 437586^2 + 201645^2 .

It is not a de Polignac number, because 232142213421 - 2² = 232142213417 is a prime.

It is a super-2 number, since 2×232142213421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232142213411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12896789626 + ... + 12896789643.

Almost surely, 2^232142213421 is an apocalyptic number.

It is an amenable number.

232142213421 is a deficient number, since it is larger than the sum of its proper divisors (103174317089).

232142213421 is a wasteful number, since it uses less digits than its factorization.

232142213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25793579275 (or 25793579272 counting only the distinct ones).

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

Adding to 232142213421 its reverse (124312241232), we get a palindrome (356454454653).

The spelling of 232142213421 in words is "two hundred thirty-two billion, one hundred forty-two million, two hundred thirteen thousand, four hundred twenty-one".