342123403 has 4 divisors (see below), whose sum is σ = 342165600. Its totient is φ = 342081208.

The previous prime is 342123391. The next prime is 342123407. The reversal of 342123403 is 304321243.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 304321243 = 83 ⋅3666521.

It is a cyclic number.

It is not a de Polignac number, because 342123403 - 2⁵ = 342123371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342123407) 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, 4675 + ... + 26572.

It is an arithmetic number, because the mean of its divisors is an integer number (85541400).

Almost surely, 2^342123403 is an apocalyptic number.

342123403 is a deficient number, since it is larger than the sum of its proper divisors (42197).

342123403 is a wasteful number, since it uses less digits than its factorization.

342123403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42196.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 342123403 is about 18496.5781429972. The cubic root of 342123403 is about 699.4031667836.

Adding to 342123403 its reverse (304321243), we get a palindrome (646444646).

The spelling of 342123403 in words is "three hundred forty-two million, one hundred twenty-three thousand, four hundred three".