42042122121122 has 16 divisors (see below), whose sum is σ = 63121299445752. Its totient is φ = 21001694981760.

The previous prime is 42042122121071. The next prime is 42042122121247. The reversal of 42042122121122 is 22112122124024.

It can be written as a sum of positive squares in 4 ways, for example, as 35851485487321 + 6190636633801 = 5987611^2 + 2488099^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42042122121091 and 42042122121100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12523598 + ... + 15521750.

Almost surely, 2^{42042122121122} is an apocalyptic number.

42042122121122 is a deficient number, since it is larger than the sum of its proper divisors (21079177324630).

42042122121122 is a wasteful number, since it uses less digits than its factorization.

42042122121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004613.

The product of its (nonzero) digits is 2048, while the sum is 26.

Adding to 42042122121122 its reverse (22112122124024), we get a palindrome (64154244245146).

The spelling of 42042122121122 in words is "forty-two trillion, forty-two billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty-two".