342784289 has 4 divisors (see below), whose sum is σ = 342911556. Its totient is φ = 342657024.

The previous prime is 342784259. The next prime is 342784307. The reversal of 342784289 is 982487243.

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 129390625 + 213393664 = 11375^2 + 14608^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342784289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (342784219) 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, 59504 + ... + 65009.

It is an arithmetic number, because the mean of its divisors is an integer number (85727889).

Almost surely, 2^342784289 is an apocalyptic number.

It is an amenable number.

342784289 is a deficient number, since it is larger than the sum of its proper divisors (127267).

342784289 is a wasteful number, since it uses less digits than its factorization.

342784289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127266.

The product of its digits is 774144, while the sum is 47.

The square root of 342784289 is about 18514.4346119454. The cubic root of 342784289 is about 699.8532270506.

The spelling of 342784289 in words is "three hundred forty-two million, seven hundred eighty-four thousand, two hundred eighty-nine".