905121241 has 2 divisors, whose sum is σ = 905121242. Its totient is φ = 905121240.

The previous prime is 905121223. The next prime is 905121257. The reversal of 905121241 is 142121509.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 574608841 + 330512400 = 23971^2 + 18180^2 .

It is a cyclic number.

It is not a de Polignac number, because 905121241 - 2⁹ = 905120729 is a prime.

It is not a weakly prime, because it can be changed into another prime (905121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 452560620 + 452560621.

It is an arithmetic number, because the mean of its divisors is an integer number (452560621).

Almost surely, 2^905121241 is an apocalyptic number.

It is an amenable number.

905121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

905121241 is an equidigital number, since it uses as much as digits as its factorization.

905121241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 905121241 is about 30085.2329391015. The cubic root of 905121241 is about 967.3172197317.

It can be divided in two parts, 9051 and 21241, that multiplied together give a palindrome (192252291).

The spelling of 905121241 in words is "nine hundred five million, one hundred twenty-one thousand, two hundred forty-one".