241021421 has 2 divisors, whose sum is σ = 241021422. Its totient is φ = 241021420.

The previous prime is 241021409. The next prime is 241021433. The reversal of 241021421 is 124120142.

It is a balanced prime because it is at equal distance from previous prime (241021409) and next prime (241021433).

It can be written as a sum of positive squares in only one way, i.e., 232105225 + 8916196 = 15235^2 + 2986^2 .

It is a cyclic number.

It is not a de Polignac number, because 241021421 - 2¹⁰ = 241020397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 241021421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (241021721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120510710 + 120510711.

It is an arithmetic number, because the mean of its divisors is an integer number (120510711).

Almost surely, 2^241021421 is an apocalyptic number.

It is an amenable number.

241021421 is a deficient number, since it is larger than the sum of its proper divisors (1).

241021421 is an equidigital number, since it uses as much as digits as its factorization.

241021421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 241021421 is about 15524.8646048846. The cubic root of 241021421 is about 622.3268624905.

Adding to 241021421 its reverse (124120142), we get a palindrome (365141563).

The spelling of 241021421 in words is "two hundred forty-one million, twenty-one thousand, four hundred twenty-one".