320142434 has 16 divisors (see below), whose sum is σ = 486631800. Its totient is φ = 157939584.

The previous prime is 320142409. The next prime is 320142461. The reversal of 320142434 is 434241023.

It can be written as a sum of positive squares in 4 ways, for example, as 122655625 + 197486809 = 11075^2 + 14053^2 .

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, 97532 + ... + 100760.

Almost surely, 2^320142434 is an apocalyptic number.

320142434 is a deficient number, since it is larger than the sum of its proper divisors (166489366).

320142434 is a wasteful number, since it uses less digits than its factorization.

320142434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 320142434 is about 17892.5245284169. The cubic root of 320142434 is about 684.0918464150.

Adding to 320142434 its reverse (434241023), we get a palindrome (754383457).

The spelling of 320142434 in words is "three hundred twenty million, one hundred forty-two thousand, four hundred thirty-four".