247229649842 has 18 divisors (see below), whose sum is σ = 431399100447. Its totient is φ = 105953454684.

The previous prime is 247229649817. The next prime is 247229649871. The reversal of 247229649842 is 248946922742.

It can be written as a sum of positive squares in only one way, i.e., 123614824921 + 123614824921 = 351589^2 + 351589^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=351589.

It is a super-3 number, since 3×247229649842³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 4897133 + ... + 4947359.

Almost surely, 2^247229649842 is an apocalyptic number.

247229649842 is a deficient number, since it is larger than the sum of its proper divisors (184169450605).

247229649842 is an frugal number, since it uses more digits than its factorization.

247229649842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100470 (or 50236 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 59.

The spelling of 247229649842 in words is "two hundred forty-seven billion, two hundred twenty-nine million, six hundred forty-nine thousand, eight hundred forty-two".