342004123 has 4 divisors (see below), whose sum is σ = 360004360. Its totient is φ = 324003888.

The previous prime is 342004109. The next prime is 342004133. The reversal of 342004123 is 321400243.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-342004123 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 18000217 = 342004123 / (3 + 4 + 2 + 0 + 0 + 4 + 1 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 342004123.

It is not an unprimeable number, because it can be changed into a prime (342004133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9000090 + ... + 9000127.

It is an arithmetic number, because the mean of its divisors is an integer number (90001090).

Almost surely, 2^342004123 is an apocalyptic number.

342004123 is a deficient number, since it is larger than the sum of its proper divisors (18000237).

342004123 is a wasteful number, since it uses less digits than its factorization.

342004123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18000236.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 342004123 is about 18493.3534817242. The cubic root of 342004123 is about 699.3218759334.

Adding to 342004123 its reverse (321400243), we get a palindrome (663404366).

The spelling of 342004123 in words is "three hundred forty-two million, four thousand, one hundred twenty-three".