142321135 has 16 divisors (see below), whose sum is σ = 187038720. Its totient is φ = 103102240.

The previous prime is 142321117. The next prime is 142321139. The reversal of 142321135 is 531123241.

It is a happy number.

It is not a de Polignac number, because 142321135 - 2⁵ = 142321103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9546 + ... + 19384.

It is an arithmetic number, because the mean of its divisors is an integer number (11689920).

Almost surely, 2^142321135 is an apocalyptic number.

142321135 is a deficient number, since it is larger than the sum of its proper divisors (44717585).

142321135 is a wasteful number, since it uses less digits than its factorization.

142321135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118.

The product of its digits is 720, while the sum is 22.

The square root of 142321135 is about 11929.8422034828. The cubic root of 142321135 is about 522.1033336238.

Adding to 142321135 its reverse (531123241), we get a palindrome (673444376).

The spelling of 142321135 in words is "one hundred forty-two million, three hundred twenty-one thousand, one hundred thirty-five".