210440442 has 16 divisors (see below), whose sum is σ = 421967520. Its totient is φ = 69965712.

The previous prime is 210440429. The next prime is 210440449. The reversal of 210440442 is 244044012.

It is not an unprimeable number, because it can be changed into a prime (210440449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42748 + ... + 47415.

It is an arithmetic number, because the mean of its divisors is an integer number (26372970).

Almost surely, 2^210440442 is an apocalyptic number.

210440442 is an abundant number, since it is smaller than the sum of its proper divisors (211527078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210440442 is a wasteful number, since it uses less digits than its factorization.

210440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90557.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 210440442 is about 14506.5654791201. The cubic root of 210440442 is about 594.8074531738.

Adding to 210440442 its reverse (244044012), we get a palindrome (454484454).

The spelling of 210440442 in words is "two hundred ten million, four hundred forty thousand, four hundred forty-two".