142643235 has 16 divisors (see below), whose sum is σ = 260833536. Its totient is φ = 65208288.

The previous prime is 142643233. The next prime is 142643239. The reversal of 142643235 is 532346241.

It is not a de Polignac number, because 142643235 - 2¹ = 142643233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142643231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679149 + ... + 679358.

It is an arithmetic number, because the mean of its divisors is an integer number (16302096).

Almost surely, 2^142643235 is an apocalyptic number.

142643235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142643235 is a deficient number, since it is larger than the sum of its proper divisors (118190301).

142643235 is a wasteful number, since it uses less digits than its factorization.

142643235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358522.

The product of its digits is 17280, while the sum is 30.

The square root of 142643235 is about 11943.3343334263. The cubic root of 142643235 is about 522.4969101563.

Adding to 142643235 its reverse (532346241), we get a palindrome (674989476).

The spelling of 142643235 in words is "one hundred forty-two million, six hundred forty-three thousand, two hundred thirty-five".