42169724167684 has 27 divisors (see below), whose sum is σ = 73953879785877. Its totient is φ = 21040139131728.

The previous prime is 42169724167679. The next prime is 42169724167723. The reversal of 42169724167684 is 48676142796124.

It is a happy number.

The square root of 42169724167684 is 6493822.

It is a perfect power (a square), and thus also a powerful number.

42169724167684 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., 34291822470084 + 7877901697600 = 5855922^2 + 2806760^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6610707607 + ... + 6610713985.

Almost surely, 2^{42169724167684} is an apocalyptic number.

42169724167684 is the 6493822-nd square number.

It is an amenable number.

42169724167684 is a deficient number, since it is larger than the sum of its proper divisors (31784155618193).

42169724167684 is an frugal number, since it uses more digits than its factorization.

42169724167684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13780 (or 6890 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 67.

The spelling of 42169724167684 in words is "forty-two trillion, one hundred sixty-nine billion, seven hundred twenty-four million, one hundred sixty-seven thousand, six hundred eighty-four".