247471602242 has 18 divisors (see below), whose sum is σ = 378400479723. Its totient is φ = 121382871792.

The previous prime is 247471602239. The next prime is 247471602251. The reversal of 247471602242 is 242206174742.

It can be written as a sum of positive squares in 5 ways, for example, as 29159319121 + 218312283121 = 170761^2 + 467239^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=351761.

It is a super-2 number, since 2×247471602242² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 247471602242.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37283348 + ... + 37289984.

Almost surely, 2^247471602242 is an apocalyptic number.

247471602242 is a deficient number, since it is larger than the sum of its proper divisors (130928877481).

247471602242 is an frugal number, since it uses more digits than its factorization.

247471602242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13382 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 41.

Adding to 247471602242 its reverse (242206174742), we get a palindrome (489677776984).

The spelling of 247471602242 in words is "two hundred forty-seven billion, four hundred seventy-one million, six hundred two thousand, two hundred forty-two".