123123101142 has 96 divisors (see below), whose sum is σ = 266360769792. Its totient is φ = 37924210368.

The previous prime is 123123101113. The next prime is 123123101177. The reversal of 123123101142 is 241101321321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14943448 + ... + 14951684.

It is an arithmetic number, because the mean of its divisors is an integer number (2774591352).

Almost surely, 2^123123101142 is an apocalyptic number.

123123101142 is an abundant number, since it is smaller than the sum of its proper divisors (143237668650).

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

123123101142 is a wasteful number, since it uses less digits than its factorization.

123123101142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8450 (or 8431 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 123123101142 its reverse (241101321321), we get a palindrome (364224422463).

The spelling of 123123101142 in words is "one hundred twenty-three billion, one hundred twenty-three million, one hundred one thousand, one hundred forty-two".