142442302213 has 4 divisors (see below), whose sum is σ = 145916504748. Its totient is φ = 138968099680.

The previous prime is 142442302199. The next prime is 142442302217. The reversal of 142442302213 is 312203244241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312203244241 = 7 ⋅44600463463.

It can be written as a sum of positive squares in 2 ways, for example, as 17951176324 + 124491125889 = 133982^2 + 352833^2 .

It is a cyclic number.

It is not a de Polignac number, because 142442302213 - 2⁵ = 142442302181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142442302217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1737101206 + ... + 1737101287.

It is an arithmetic number, because the mean of its divisors is an integer number (36479126187).

Almost surely, 2^142442302213 is an apocalyptic number.

It is an amenable number.

142442302213 is a deficient number, since it is larger than the sum of its proper divisors (3474202535).

142442302213 is an equidigital number, since it uses as much as digits as its factorization.

142442302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474202534.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 142442302213 its reverse (312203244241), we get a palindrome (454645546454).

The spelling of 142442302213 in words is "one hundred forty-two billion, four hundred forty-two million, three hundred two thousand, two hundred thirteen".