72217410242 has 8 divisors (see below), whose sum is σ = 108371695116. Its totient is φ = 36093511872.

The previous prime is 72217410211. The next prime is 72217410253. The reversal of 72217410242 is 24201471227.

It can be written as a sum of positive squares in 2 ways, for example, as 70585331041 + 1632079201 = 265679^2 + 40399^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×72217410242² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72217410199 and 72217410208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7590683 + ... + 7600190.

Almost surely, 2^72217410242 is an apocalyptic number.

72217410242 is a deficient number, since it is larger than the sum of its proper divisors (36154284874).

72217410242 is a wasteful number, since it uses less digits than its factorization.

72217410242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15193252.

The product of its (nonzero) digits is 12544, while the sum is 32.

Adding to 72217410242 its reverse (24201471227), we get a palindrome (96418881469).

The spelling of 72217410242 in words is "seventy-two billion, two hundred seventeen million, four hundred ten thousand, two hundred forty-two".