142236023 has 2 divisors, whose sum is σ = 142236024. Its totient is φ = 142236022.

The previous prime is 142236007. The next prime is 142236043. The reversal of 142236023 is 320632241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142236023 - 2⁴ = 142236007 is a prime.

It is equal to p_8031308 and since 142236023 and 8031308 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142236023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142236043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71118011 + 71118012.

It is an arithmetic number, because the mean of its divisors is an integer number (71118012).

Almost surely, 2^142236023 is an apocalyptic number.

142236023 is a deficient number, since it is larger than the sum of its proper divisors (1).

142236023 is an equidigital number, since it uses as much as digits as its factorization.

142236023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 142236023 is about 11926.2744811613. The cubic root of 142236023 is about 521.9992354280. Note that the first 3 decimals are identical.

Adding to 142236023 its reverse (320632241), we get a palindrome (462868264).

The spelling of 142236023 in words is "one hundred forty-two million, two hundred thirty-six thousand, twenty-three".