123210112142 has 24 divisors (see below), whose sum is σ = 200160656640. Its totient is φ = 56856159360.

The previous prime is 123210112121. The next prime is 123210112159. The reversal of 123210112142 is 241211012321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2090534 + ... + 2148662.

It is an arithmetic number, because the mean of its divisors is an integer number (8340027360).

Almost surely, 2^123210112142 is an apocalyptic number.

123210112142 is a deficient number, since it is larger than the sum of its proper divisors (76950544498).

123210112142 is a wasteful number, since it uses less digits than its factorization.

123210112142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64428 (or 64415 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 123210112142 its reverse (241211012321), we get a palindrome (364421124463).

The spelling of 123210112142 in words is "one hundred twenty-three billion, two hundred ten million, one hundred twelve thousand, one hundred forty-two".