1147040261 has 2 divisors, whose sum is σ = 1147040262. Its totient is φ = 1147040260.

The previous prime is 1147040249. The next prime is 1147040333. The reversal of 1147040261 is 1620407411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 593896900 + 553143361 = 24370^2 + 23519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147040261 - 2⁶ = 1147040197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1147040261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147040221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573520130 + 573520131.

It is an arithmetic number, because the mean of its divisors is an integer number (573520131).

Almost surely, 2^1147040261 is an apocalyptic number.

It is an amenable number.

1147040261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147040261 is an equidigital number, since it uses as much as digits as its factorization.

1147040261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1147040261 is about 33867.9828303960. The cubic root of 1147040261 is about 1046.7899729752.

Adding to 1147040261 its reverse (1620407411), we get a palindrome (2767447672).

The spelling of 1147040261 in words is "one billion, one hundred forty-seven million, forty thousand, two hundred sixty-one".