405241241 has 2 divisors, whose sum is σ = 405241242. Its totient is φ = 405241240.

The previous prime is 405241229. The next prime is 405241247. The reversal of 405241241 is 142142504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401160841 + 4080400 = 20029^2 + 2020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405241241 is a prime.

It is a super-5 number, since 5×405241241⁵ (a number of 44 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (405241247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202620620 + 202620621.

It is an arithmetic number, because the mean of its divisors is an integer number (202620621).

Almost surely, 2^405241241 is an apocalyptic number.

It is an amenable number.

405241241 is a deficient number, since it is larger than the sum of its proper divisors (1).

405241241 is an equidigital number, since it uses as much as digits as its factorization.

405241241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 405241241 is about 20130.6045860526. The cubic root of 405241241 is about 740.0104947379.

Adding to 405241241 its reverse (142142504), we get a palindrome (547383745).

The spelling of 405241241 in words is "four hundred five million, two hundred forty-one thousand, two hundred forty-one".