1264542259 has 2 divisors, whose sum is σ = 1264542260. Its totient is φ = 1264542258.

The previous prime is 1264542247. The next prime is 1264542269. The reversal of 1264542259 is 9522454621.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264542259 is a prime.

It is not a weakly prime, because it can be changed into another prime (1264542269) 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 as a sum of consecutive naturals, namely, 632271129 + 632271130.

It is an arithmetic number, because the mean of its divisors is an integer number (632271130).

Almost surely, 2^1264542259 is an apocalyptic number.

1264542259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264542259 is an equidigital number, since it uses as much as digits as its factorization.

1264542259 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 1264542259 is about 35560.4029645335. The cubic root of 1264542259 is about 1081.3786289375.

The spelling of 1264542259 in words is "one billion, two hundred sixty-four million, five hundred forty-two thousand, two hundred fifty-nine".