210442401 has 16 divisors (see below), whose sum is σ = 335749120. Its totient is φ = 129502800.

The previous prime is 210442399. The next prime is 210442411. The reversal of 210442401 is 104244012.

It is not a de Polignac number, because 210442401 - 2¹ = 210442399 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (210442411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299425 + ... + 300126.

It is an arithmetic number, because the mean of its divisors is an integer number (20984320).

Almost surely, 2^210442401 is an apocalyptic number.

It is an amenable number.

210442401 is a deficient number, since it is larger than the sum of its proper divisors (125306719).

210442401 is a wasteful number, since it uses less digits than its factorization.

210442401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599573 (or 599567 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 210442401 is about 14506.6330001141. The cubic root of 210442401 is about 594.8092988649.

Adding to 210442401 its reverse (104244012), we get a palindrome (314686413).

The spelling of 210442401 in words is "two hundred ten million, four hundred forty-two thousand, four hundred one".