142302231 has 8 divisors (see below), whose sum is σ = 210818160. Its totient is φ = 94868136.

The previous prime is 142302227. The next prime is 142302263. The reversal of 142302231 is 132203241.

It is not a de Polignac number, because 142302231 - 2² = 142302227 is a prime.

It is a super-2 number, since 2×142302231² = 40499849895154722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142302931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635200 + ... + 2635253.

It is an arithmetic number, because the mean of its divisors is an integer number (26352270).

Almost surely, 2^142302231 is an apocalyptic number.

142302231 is a deficient number, since it is larger than the sum of its proper divisors (68515929).

142302231 is an equidigital number, since it uses as much as digits as its factorization.

142302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270462 (or 5270456 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 142302231 is about 11929.0498783432. The cubic root of 142302231 is about 522.0802162363.

Adding to 142302231 its reverse (132203241), we get a palindrome (274505472).

It can be divided in two parts, 14230 and 2231, that added together give a palindrome (16461).

The spelling of 142302231 in words is "one hundred forty-two million, three hundred two thousand, two hundred thirty-one".