320242499 has 2 divisors, whose sum is σ = 320242500. Its totient is φ = 320242498.

The previous prime is 320242463. The next prime is 320242561. The reversal of 320242499 is 994242023.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320242499 is a prime.

It is not a weakly prime, because it can be changed into another prime (320242799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160121249 + 160121250.

It is an arithmetic number, because the mean of its divisors is an integer number (160121250).

Almost surely, 2^320242499 is an apocalyptic number.

320242499 is a deficient number, since it is larger than the sum of its proper divisors (1).

320242499 is an equidigital number, since it uses as much as digits as its factorization.

320242499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 320242499 is about 17895.3205894725. The cubic root of 320242499 is about 684.1631131519.

The spelling of 320242499 in words is "three hundred twenty million, two hundred forty-two thousand, four hundred ninety-nine".