234240143 has 4 divisors (see below), whose sum is σ = 234330768. Its totient is φ = 234149520.

The previous prime is 234240133. The next prime is 234240179. The reversal of 234240143 is 341042432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234240143 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 (234240103) 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, 41318 + ... + 46643.

It is an arithmetic number, because the mean of its divisors is an integer number (58582692).

Almost surely, 2^234240143 is an apocalyptic number.

234240143 is a deficient number, since it is larger than the sum of its proper divisors (90625).

234240143 is an equidigital number, since it uses as much as digits as its factorization.

234240143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90624.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 234240143 is about 15304.9058474726. The cubic root of 234240143 is about 616.4347431085.

Adding to 234240143 its reverse (341042432), we get a palindrome (575282575).

The spelling of 234240143 in words is "two hundred thirty-four million, two hundred forty thousand, one hundred forty-three".