123042421122 has 16 divisors (see below), whose sum is σ = 251807746080. Its totient is φ = 40060323072.

The previous prime is 123042421111. The next prime is 123042421123. The reversal of 123042421122 is 221124240321.

It is a junction number, because it is equal to n+sod(n) for n = 123042421092 and 123042421101.

It is not an unprimeable number, because it can be changed into a prime (123042421123) 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, 238454047 + ... + 238454562.

It is an arithmetic number, because the mean of its divisors is an integer number (15737984130).

Almost surely, 2^123042421122 is an apocalyptic number.

123042421122 is an abundant number, since it is smaller than the sum of its proper divisors (128765324958).

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

123042421122 is a wasteful number, since it uses less digits than its factorization.

123042421122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476908657.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 123042421122 its reverse (221124240321), we get a palindrome (344166661443).

The spelling of 123042421122 in words is "one hundred twenty-three billion, forty-two million, four hundred twenty-one thousand, one hundred twenty-two".