342815947 has 4 divisors (see below), whose sum is σ = 342919240. Its totient is φ = 342712656.

The previous prime is 342815933. The next prime is 342815951. The reversal of 342815947 is 749518243.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 342815947 - 2²⁷ = 208598219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342815927) 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 3 ways as a sum of consecutive naturals, for example, 46497 + ... + 53362.

It is an arithmetic number, because the mean of its divisors is an integer number (85729810).

Almost surely, 2^342815947 is an apocalyptic number.

342815947 is a deficient number, since it is larger than the sum of its proper divisors (103293).

342815947 is an equidigital number, since it uses as much as digits as its factorization.

342815947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103292.

The product of its digits is 241920, while the sum is 43.

The square root of 342815947 is about 18515.2895467503. The cubic root of 342815947 is about 699.8747714758.

The spelling of 342815947 in words is "three hundred forty-two million, eight hundred fifteen thousand, nine hundred forty-seven".