123140341242 has 12 divisors (see below), whose sum is σ = 266804072730. Its totient is φ = 41046780408.

The previous prime is 123140341241. The next prime is 123140341283. The reversal of 123140341242 is 242143041321.

123140341242 is a `hidden beast` number, since 1 + 2 + 314 + 0 + 341 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114386680521 + 8753660721 = 338211^2 + 93561^2 .

It is a super-2 number, since 2×123140341242² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123140341241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3420565017 + ... + 3420565052.

Almost surely, 2^123140341242 is an apocalyptic number.

123140341242 is an abundant number, since it is smaller than the sum of its proper divisors (143663731488).

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

123140341242 is a wasteful number, since it uses less digits than its factorization.

123140341242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6841130077 (or 6841130074 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 123140341242 its reverse (242143041321), we get a palindrome (365283382563).

The spelling of 123140341242 in words is "one hundred twenty-three billion, one hundred forty million, three hundred forty-one thousand, two hundred forty-two".