1266241245 has 8 divisors (see below), whose sum is σ = 2025986016. Its totient is φ = 675328656.

The previous prime is 1266241237. The next prime is 1266241247. The reversal of 1266241245 is 5421426621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1266241245 - 2³ = 1266241237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266241247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42208027 + ... + 42208056.

It is an arithmetic number, because the mean of its divisors is an integer number (253248252).

Almost surely, 2^1266241245 is an apocalyptic number.

1266241245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1266241245 is a deficient number, since it is larger than the sum of its proper divisors (759744771).

1266241245 is an equidigital number, since it uses as much as digits as its factorization.

1266241245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84416091.

The product of its digits is 23040, while the sum is 33.

The square root of 1266241245 is about 35584.2836797370. The cubic root of 1266241245 is about 1081.8627105451.

Adding to 1266241245 its reverse (5421426621), we get a palindrome (6687667866).

The spelling of 1266241245 in words is "one billion, two hundred sixty-six million, two hundred forty-one thousand, two hundred forty-five".