142640532313 has 4 divisors (see below), whose sum is σ = 142641403828. Its totient is φ = 142639660800.

The previous prime is 142640532301. The next prime is 142640532383. The reversal of 142640532313 is 313235046241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 28969061209 + 113671471104 = 170203^2 + 337152^2 .

It is a cyclic number.

It is not a de Polignac number, because 142640532313 - 2²¹ = 142638435161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142640532383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108156 + ... + 544957.

It is an arithmetic number, because the mean of its divisors is an integer number (35660350957).

Almost surely, 2^142640532313 is an apocalyptic number.

It is an amenable number.

142640532313 is a deficient number, since it is larger than the sum of its proper divisors (871515).

142640532313 is an equidigital number, since it uses as much as digits as its factorization.

142640532313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871514.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 142640532313 its reverse (313235046241), we get a palindrome (455875578554).

The spelling of 142640532313 in words is "one hundred forty-two billion, six hundred forty million, five hundred thirty-two thousand, three hundred thirteen".