142320122 has 16 divisors (see below), whose sum is σ = 244311552. Its totient is φ = 60910800.

The previous prime is 142320097. The next prime is 142320149. The reversal of 142320122 is 221023241.

It is a self number, because there is not a number n which added to its sum of digits gives 142320122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4247 + ... + 17397.

It is an arithmetic number, because the mean of its divisors is an integer number (15269472).

Almost surely, 2^142320122 is an apocalyptic number.

142320122 is a deficient number, since it is larger than the sum of its proper divisors (101991430).

142320122 is a wasteful number, since it uses less digits than its factorization.

142320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13933.

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

The square root of 142320122 is about 11929.7997468524. The cubic root of 142320122 is about 522.1020948948.

Adding to 142320122 its reverse (221023241), we get a palindrome (363343363).

The spelling of 142320122 in words is "one hundred forty-two million, three hundred twenty thousand, one hundred twenty-two".