142135312 has 30 divisors (see below), whose sum is σ = 302702414. Its totient is φ = 64606080.

The previous prime is 142135291. The next prime is 142135313. The reversal of 142135312 is 213531241.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 134931456 + 7203856 = 11616^2 + 2684^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (142135313) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34773 + ... + 38644.

Almost surely, 2^142135312 is an apocalyptic number.

It is an amenable number.

142135312 is an abundant number, since it is smaller than the sum of its proper divisors (160567102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142135312 is a wasteful number, since it uses less digits than its factorization.

142135312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73447 (or 73430 counting only the distinct ones).

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

The square root of 142135312 is about 11922.0515013147. The cubic root of 142135312 is about 521.8760048602.

Adding to 142135312 its reverse (213531241), we get a palindrome (355666553).

The spelling of 142135312 in words is "one hundred forty-two million, one hundred thirty-five thousand, three hundred twelve".