342120123 has 12 divisors (see below), whose sum is σ = 510115008. Its totient is φ = 220722480.

The previous prime is 342120109. The next prime is 342120127. The reversal of 342120123 is 321021243.

It is not a de Polignac number, because 342120123 - 2⁵ = 342120091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 342120096 and 342120105.

It is not an unprimeable number, because it can be changed into a prime (342120127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612840 + ... + 613397.

It is an arithmetic number, because the mean of its divisors is an integer number (42509584).

Almost surely, 2^342120123 is an apocalyptic number.

342120123 is a deficient number, since it is larger than the sum of its proper divisors (167994885).

342120123 is a wasteful number, since it uses less digits than its factorization.

342120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226274 (or 1226271 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 342120123 is about 18496.4894777360. The cubic root of 342120123 is about 699.4009316741.

Adding to 342120123 its reverse (321021243), we get a palindrome (663141366).

It can be divided in two parts, 342120 and 123, that added together give a palindrome (342243).

The spelling of 342120123 in words is "three hundred forty-two million, one hundred twenty thousand, one hundred twenty-three".