142304233 has 4 divisors (see below), whose sum is σ = 142587648. Its totient is φ = 142020820.

The previous prime is 142304221. The next prime is 142304237. The reversal of 142304233 is 332403241.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 332403241 = 14107 ⋅23563.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142304233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142304237) 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, 140953 + ... + 141958.

It is an arithmetic number, because the mean of its divisors is an integer number (35646912).

Almost surely, 2^142304233 is an apocalyptic number.

It is an amenable number.

142304233 is a deficient number, since it is larger than the sum of its proper divisors (283415).

142304233 is an equidigital number, since it uses as much as digits as its factorization.

142304233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283414.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 142304233 is about 11929.1337908500. The cubic root of 142304233 is about 522.0826645458.

Adding to 142304233 its reverse (332403241), we get a palindrome (474707474).

The spelling of 142304233 in words is "one hundred forty-two million, three hundred four thousand, two hundred thirty-three".