1264197241 has 4 divisors (see below), whose sum is σ = 1298364772. Its totient is φ = 1230029712.

The previous prime is 1264197227. The next prime is 1264197247. The reversal of 1264197241 is 1427914621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1427914621 = 7 ⋅203987803.

It can be written as a sum of positive squares in 2 ways, for example, as 695851641 + 568345600 = 26379^2 + 23840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264197241 - 2⁷ = 1264197113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 34167493 = 1264197241 / (1 + 2 + 6 + 4 + 1 + 9 + 7 + 2 + 4 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1264197241.

It is not an unprimeable number, because it can be changed into a prime (1264197247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17083710 + ... + 17083783.

It is an arithmetic number, because the mean of its divisors is an integer number (324591193).

Almost surely, 2^1264197241 is an apocalyptic number.

It is an amenable number.

1264197241 is a deficient number, since it is larger than the sum of its proper divisors (34167531).

1264197241 is an equidigital number, since it uses as much as digits as its factorization.

1264197241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34167530.

The product of its digits is 24192, while the sum is 37.

The square root of 1264197241 is about 35555.5514793400. The cubic root of 1264197241 is about 1081.2802721274.

The spelling of 1264197241 in words is "one billion, two hundred sixty-four million, one hundred ninety-seven thousand, two hundred forty-one".