1243054601 has 2 divisors, whose sum is σ = 1243054602. Its totient is φ = 1243054600.

The previous prime is 1243054591. The next prime is 1243054607. The reversal of 1243054601 is 1064503421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964164601 + 278890000 = 31051^2 + 16700^2 .

It is an emirp because it is prime and its reverse (1064503421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1243054601 - 2¹⁰ = 1243053577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1243054607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621527300 + 621527301.

It is an arithmetic number, because the mean of its divisors is an integer number (621527301).

Almost surely, 2^1243054601 is an apocalyptic number.

It is an amenable number.

1243054601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243054601 is an equidigital number, since it uses as much as digits as its factorization.

1243054601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1243054601 is about 35256.9794650648. The cubic root of 1243054601 is about 1075.2185172516.

The spelling of 1243054601 in words is "one billion, two hundred forty-three million, fifty-four thousand, six hundred one".