12040410042 has 24 divisors (see below), whose sum is σ = 26145674100. Its totient is φ = 4004528640.

The previous prime is 12040409977. The next prime is 12040410103. The reversal of 12040410042 is 24001404021.

12040410042 is a `hidden beast` number, since 120 + 404 + 100 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11903028201 + 137381841 = 109101^2 + 11721^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12040409997 and 12040410024.

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, 736809 + ... + 752972.

Almost surely, 2^12040410042 is an apocalyptic number.

12040410042 is an abundant number, since it is smaller than the sum of its proper divisors (14105264058).

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

12040410042 is a wasteful number, since it uses less digits than its factorization.

12040410042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490238 (or 1490235 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12040410042 its reverse (24001404021), we get a palindrome (36041814063).

The spelling of 12040410042 in words is "twelve billion, forty million, four hundred ten thousand, forty-two".