320122142 has 16 divisors (see below), whose sum is σ = 506697120. Its totient is φ = 151379712.

The previous prime is 320122139. The next prime is 320122177. The reversal of 320122142 is 241221023.

It is a self number, because there is not a number n which added to its sum of digits gives 320122142.

It is a congruent number.

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, 35003 + ... + 43190.

It is an arithmetic number, because the mean of its divisors is an integer number (31668570).

Almost surely, 2^320122142 is an apocalyptic number.

320122142 is a deficient number, since it is larger than the sum of its proper divisors (186574978).

320122142 is a wasteful number, since it uses less digits than its factorization.

320122142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78307.

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

The square root of 320122142 is about 17891.9574669738. The cubic root of 320122142 is about 684.0773925516.

Adding to 320122142 its reverse (241221023), we get a palindrome (561343165).

The spelling of 320122142 in words is "three hundred twenty million, one hundred twenty-two thousand, one hundred forty-two".