1241252401 has 2 divisors, whose sum is σ = 1241252402. Its totient is φ = 1241252400.

The previous prime is 1241252393. The next prime is 1241252413. The reversal of 1241252401 is 1042521421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1162469025 + 78783376 = 34095^2 + 8876^2 .

It is an emirp because it is prime and its reverse (1042521421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241252401 - 2³ = 1241252393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241252101) 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, 620626200 + 620626201.

It is an arithmetic number, because the mean of its divisors is an integer number (620626201).

Almost surely, 2^1241252401 is an apocalyptic number.

It is an amenable number.

1241252401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241252401 is an equidigital number, since it uses as much as digits as its factorization.

1241252401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1241252401 is about 35231.4121346278. The cubic root of 1241252401 is about 1074.6986430563.

Adding to 1241252401 its reverse (1042521421), we get a palindrome (2283773822).

The spelling of 1241252401 in words is "one billion, two hundred forty-one million, two hundred fifty-two thousand, four hundred one".