320142045 has 32 divisors (see below), whose sum is σ = 543697920. Its totient is φ = 160302080.

The previous prime is 320142041. The next prime is 320142061. The reversal of 320142045 is 540241023.

It is not a de Polignac number, because 320142045 - 2² = 320142041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320142041) 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 31 ways as a sum of consecutive naturals, for example, 120835 + ... + 123455.

It is an arithmetic number, because the mean of its divisors is an integer number (16990560).

Almost surely, 2^320142045 is an apocalyptic number.

It is an amenable number.

320142045 is a deficient number, since it is larger than the sum of its proper divisors (223555875).

320142045 is a wasteful number, since it uses less digits than its factorization.

320142045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 320142045 is about 17892.5136579520. The cubic root of 320142045 is about 684.0915693385.

Adding to 320142045 its reverse (540241023), we get a palindrome (860383068).

The spelling of 320142045 in words is "three hundred twenty million, one hundred forty-two thousand, forty-five".