42166005236 has 6 divisors (see below), whose sum is σ = 73790509170. Its totient is φ = 21083002616.

The previous prime is 42166005139. The next prime is 42166005263. The reversal of 42166005236 is 63250066124.

It is a happy number.

42166005236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32704552336 + 9461452900 = 180844^2 + 97270^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42166005196 and 42166005205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270750651 + ... + 5270750658.

It is an arithmetic number, because the mean of its divisors is an integer number (12298418195).

Almost surely, 2^42166005236 is an apocalyptic number.

It is an amenable number.

42166005236 is a deficient number, since it is larger than the sum of its proper divisors (31624503934).

42166005236 is a wasteful number, since it uses less digits than its factorization.

42166005236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541501313 (or 10541501311 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 42166005236 in words is "forty-two billion, one hundred sixty-six million, five thousand, two hundred thirty-six".