142222013 has 4 divisors (see below), whose sum is σ = 142285308. Its totient is φ = 142158720.

The previous prime is 142222009. The next prime is 142222021. The reversal of 142222013 is 310222241.

142222013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16176484 + 126045529 = 4022^2 + 11227^2 .

It is a cyclic number.

It is not a de Polignac number, because 142222013 - 2² = 142222009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142221982 and 142222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142222033) 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, 28148 + ... + 32813.

It is an arithmetic number, because the mean of its divisors is an integer number (35571327).

Almost surely, 2^142222013 is an apocalyptic number.

It is an amenable number.

142222013 is a deficient number, since it is larger than the sum of its proper divisors (63295).

142222013 is an equidigital number, since it uses as much as digits as its factorization.

142222013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63294.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142222013 is about 11925.6871080873. The cubic root of 142222013 is about 521.9820961941.

Adding to 142222013 its reverse (310222241), we get a palindrome (452444254).

The spelling of 142222013 in words is "one hundred forty-two million, two hundred twenty-two thousand, thirteen".