1292045281 has 2 divisors, whose sum is σ = 1292045282. Its totient is φ = 1292045280.

The previous prime is 1292045257. The next prime is 1292045303. The reversal of 1292045281 is 1825402921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1184736400 + 107308881 = 34420^2 + 10359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292045281 - 2⁹ = 1292044769 is a prime.

It is a super-2 number, since 2×1292045281² = 3338762016308737922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1292045981) 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, 646022640 + 646022641.

It is an arithmetic number, because the mean of its divisors is an integer number (646022641).

Almost surely, 2^1292045281 is an apocalyptic number.

It is an amenable number.

1292045281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292045281 is an equidigital number, since it uses as much as digits as its factorization.

1292045281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1292045281 is about 35945.0313812633. The cubic root of 1292045281 is about 1089.1622440837.

The spelling of 1292045281 in words is "one billion, two hundred ninety-two million, forty-five thousand, two hundred eighty-one".