142303239 has 18 divisors (see below), whose sum is σ = 222579240. Its totient is φ = 87570288.

The previous prime is 142303223. The next prime is 142303247. The reversal of 142303239 is 932303241.

It is a happy number.

142303239 is a `hidden beast` number, since 1 + 423 + 0 + 3 + 239 = 666.

It is not a de Polignac number, because 142303239 - 2⁴ = 142303223 is a prime.

It is a super-2 number, since 2×142303239² = 40500423659782242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142303219) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 45259 + ... + 48300.

Almost surely, 2^142303239 is an apocalyptic number.

142303239 is a deficient number, since it is larger than the sum of its proper divisors (80276001).

142303239 is a wasteful number, since it uses less digits than its factorization.

142303239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93591 (or 93575 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 142303239 is about 11929.0921280708. The cubic root of 142303239 is about 522.0814489545.

The spelling of 142303239 in words is "one hundred forty-two million, three hundred three thousand, two hundred thirty-nine".