1260085247 has 4 divisors (see below), whose sum is σ = 1260159120. Its totient is φ = 1260011376.

The previous prime is 1260085219. The next prime is 1260085249. The reversal of 1260085247 is 7425800621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7425800621 = 60647 ⋅122443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260085247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260085249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158 + ... + 50300.

It is an arithmetic number, because the mean of its divisors is an integer number (315039780).

Almost surely, 2^1260085247 is an apocalyptic number.

1260085247 is a deficient number, since it is larger than the sum of its proper divisors (73873).

1260085247 is an equidigital number, since it uses as much as digits as its factorization.

1260085247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73872.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1260085247 is about 35497.6794593675. The cubic root of 1260085247 is about 1080.1066558477.

Adding to 1260085247 its reverse (7425800621), we get a palindrome (8685885868).

The spelling of 1260085247 in words is "one billion, two hundred sixty million, eighty-five thousand, two hundred forty-seven".