123210142 has 8 divisors (see below), whose sum is σ = 201616632. Its totient is φ = 56004600.

The previous prime is 123210133. The next prime is 123210161. The reversal of 123210142 is 241012321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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, 2800209 + ... + 2800252.

It is an arithmetic number, because the mean of its divisors is an integer number (25202079).

Almost surely, 2^123210142 is an apocalyptic number.

123210142 is a deficient number, since it is larger than the sum of its proper divisors (78406490).

123210142 is a wasteful number, since it uses less digits than its factorization.

123210142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600474.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 123210142 is about 11100.0063963946. The cubic root of 123210142 is about 497.6020406334.

Adding to 123210142 its reverse (241012321), we get a palindrome (364222463).

The spelling of 123210142 in words is "one hundred twenty-three million, two hundred ten thousand, one hundred forty-two".