241421813 has 2 divisors, whose sum is σ = 241421814. Its totient is φ = 241421812.

The previous prime is 241421779. The next prime is 241421819. The reversal of 241421813 is 318124142.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241087729 + 334084 = 15527^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 241421813 - 2⁶ = 241421749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241421819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120710906 + 120710907.

It is an arithmetic number, because the mean of its divisors is an integer number (120710907).

Almost surely, 2^241421813 is an apocalyptic number.

It is an amenable number.

241421813 is a deficient number, since it is larger than the sum of its proper divisors (1).

241421813 is an equidigital number, since it uses as much as digits as its factorization.

241421813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 26.

The square root of 241421813 is about 15537.7544387855. The cubic root of 241421813 is about 622.6712811795.

Adding to 241421813 its reverse (318124142), we get a palindrome (559545955).

The spelling of 241421813 in words is "two hundred forty-one million, four hundred twenty-one thousand, eight hundred thirteen".