320742829 has 4 divisors (see below), whose sum is σ = 349901280. Its totient is φ = 291584380.

The previous prime is 320742823. The next prime is 320742839. The reversal of 320742829 is 928247023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320742829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320742823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14579209 + ... + 14579230.

It is an arithmetic number, because the mean of its divisors is an integer number (87475320).

Almost surely, 2^320742829 is an apocalyptic number.

It is an amenable number.

320742829 is a deficient number, since it is larger than the sum of its proper divisors (29158451).

320742829 is a wasteful number, since it uses less digits than its factorization.

320742829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29158450.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 320742829 is about 17909.2944863833. The cubic root of 320742829 is about 684.5192278862.

The spelling of 320742829 in words is "three hundred twenty million, seven hundred forty-two thousand, eight hundred twenty-nine".