210242441 has 4 divisors (see below), whose sum is σ = 210783300. Its totient is φ = 209701584.

The previous prime is 210242419. The next prime is 210242497. The reversal of 210242441 is 144242012.

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 133171600 + 77070841 = 11540^2 + 8779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210242441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210242401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269846 + ... + 270623.

It is an arithmetic number, because the mean of its divisors is an integer number (52695825).

Almost surely, 2^210242441 is an apocalyptic number.

It is an amenable number.

210242441 is a deficient number, since it is larger than the sum of its proper divisors (540859).

210242441 is an equidigital number, since it uses as much as digits as its factorization.

210242441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540858.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 210242441 is about 14499.7393424847. The cubic root of 210242441 is about 594.6208454640.

Adding to 210242441 its reverse (144242012), we get a palindrome (354484453).

The spelling of 210242441 in words is "two hundred ten million, two hundred forty-two thousand, four hundred forty-one".