247792512242 has 30 divisors (see below), whose sum is σ = 408995703165. Its totient is φ = 112594241320.

The previous prime is 247792512239. The next prime is 247792512263. The reversal of 247792512242 is 242215297742.

It can be written as a sum of positive squares in 2 ways, for example, as 207980690401 + 39811821841 = 456049^2 + 199529^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=351989.

It is a super-2 number, since 2×247792512242² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 85179884 + ... + 85182792.

Almost surely, 2^247792512242 is an apocalyptic number.

247792512242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

247792512242 is a deficient number, since it is larger than the sum of its proper divisors (161203190923).

247792512242 is an frugal number, since it uses more digits than its factorization.

247792512242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864 (or 2922 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The spelling of 247792512242 in words is "two hundred forty-seven billion, seven hundred ninety-two million, five hundred twelve thousand, two hundred forty-two".