241420021 has 4 divisors (see below), whose sum is σ = 242010700. Its totient is φ = 240829344.

The previous prime is 241420001. The next prime is 241420057. The reversal of 241420021 is 120024142.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 224700100 + 16719921 = 14990^2 + 4089^2 .

It is a cyclic number.

It is not a de Polignac number, because 241420021 - 2¹¹ = 241417973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 241419977 and 241420004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241420001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294726 + ... + 295543.

It is an arithmetic number, because the mean of its divisors is an integer number (60502675).

Almost surely, 2^241420021 is an apocalyptic number.

It is an amenable number.

241420021 is a deficient number, since it is larger than the sum of its proper divisors (590679).

241420021 is an equidigital number, since it uses as much as digits as its factorization.

241420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590678.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 241420021 is about 15537.6967726880. The cubic root of 241420021 is about 622.6697405431.

Adding to 241420021 its reverse (120024142), we get a palindrome (361444163).

The spelling of 241420021 in words is "two hundred forty-one million, four hundred twenty thousand, twenty-one".