320142401 has 4 divisors (see below), whose sum is σ = 320390532. Its totient is φ = 319894272.

The previous prime is 320142379. The next prime is 320142409. The reversal of 320142401 is 104241023.

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 284799376 + 35343025 = 16876^2 + 5945^2 .

It is a cyclic number.

It is not a de Polignac number, because 320142401 - 2¹⁰ = 320141377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320142401.

It is not an unprimeable number, because it can be changed into a prime (320142409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122120 + ... + 124713.

It is an arithmetic number, because the mean of its divisors is an integer number (80097633).

Almost surely, 2^320142401 is an apocalyptic number.

It is an amenable number.

320142401 is a deficient number, since it is larger than the sum of its proper divisors (248131).

320142401 is a wasteful number, since it uses less digits than its factorization.

320142401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248130.

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

The square root of 320142401 is about 17892.5236062440. The cubic root of 320142401 is about 684.0918229098.

Adding to 320142401 its reverse (104241023), we get a palindrome (424383424).

The spelling of 320142401 in words is "three hundred twenty million, one hundred forty-two thousand, four hundred one".