142330231 has 8 divisors (see below), whose sum is σ = 151218720. Its totient is φ = 133707168.

The previous prime is 142330219. The next prime is 142330249. The reversal of 142330231 is 132033241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-142330231 is a prime.

It is a super-2 number, since 2×142330231² = 40515789313026722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142330199 and 142330208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142336231) 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 7 ways as a sum of consecutive naturals, for example, 65251 + ... + 67396.

It is an arithmetic number, because the mean of its divisors is an integer number (18902340).

Almost surely, 2^142330231 is an apocalyptic number.

142330231 is a deficient number, since it is larger than the sum of its proper divisors (8888489).

142330231 is a wasteful number, since it uses less digits than its factorization.

142330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132713.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 142330231 is about 11930.2234262398. The cubic root of 142330231 is about 522.1144562415.

Adding to 142330231 its reverse (132033241), we get a palindrome (274363472).

The spelling of 142330231 in words is "one hundred forty-two million, three hundred thirty thousand, two hundred thirty-one".