403240241 has 2 divisors, whose sum is σ = 403240242. Its totient is φ = 403240240.

The previous prime is 403240223. The next prime is 403240291. The reversal of 403240241 is 142042304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395174641 + 8065600 = 19879^2 + 2840^2 .

It is a cyclic number.

It is not a de Polignac number, because 403240241 - 2²² = 399045937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (403240291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201620120 + 201620121.

It is an arithmetic number, because the mean of its divisors is an integer number (201620121).

Almost surely, 2^403240241 is an apocalyptic number.

It is an amenable number.

403240241 is a deficient number, since it is larger than the sum of its proper divisors (1).

403240241 is an equidigital number, since it uses as much as digits as its factorization.

403240241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 403240241 is about 20080.8426367023. The cubic root of 403240241 is about 738.7904766421.

Adding to 403240241 its reverse (142042304), we get a palindrome (545282545).

The spelling of 403240241 in words is "four hundred three million, two hundred forty thousand, two hundred forty-one".