123210342 has 16 divisors (see below), whose sum is σ = 273800880. Its totient is φ = 41070096.

The previous prime is 123210317. The next prime is 123210343. The reversal of 123210342 is 243012321.

123210342 is a `hidden beast` number, since 1 + 2 + 321 + 0 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123210343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140783 + ... + 1140890.

It is an arithmetic number, because the mean of its divisors is an integer number (17112555).

Almost surely, 2^123210342 is an apocalyptic number.

123210342 is an abundant number, since it is smaller than the sum of its proper divisors (150590538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123210342 is a wasteful number, since it uses less digits than its factorization.

123210342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281684 (or 2281678 counting only the distinct ones).

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

The square root of 123210342 is about 11100.0154053947. The cubic root of 123210342 is about 497.6023098763.

Adding to 123210342 its reverse (243012321), we get a palindrome (366222663).

The spelling of 123210342 in words is "one hundred twenty-three million, two hundred ten thousand, three hundred forty-two".