210442132 has 6 divisors (see below), whose sum is σ = 368273738. Its totient is φ = 105221064.

The previous prime is 210442123. The next prime is 210442139. The reversal of 210442132 is 231244012.

It can be written as a sum of positive squares in only one way, i.e., 152621316 + 57820816 = 12354^2 + 7604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210442139) 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 as a sum of consecutive naturals, namely, 26305263 + ... + 26305270.

Almost surely, 2^210442132 is an apocalyptic number.

It is an amenable number.

210442132 is a deficient number, since it is larger than the sum of its proper divisors (157831606).

210442132 is a wasteful number, since it uses less digits than its factorization.

210442132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52610537 (or 52610535 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 210442132 is about 14506.6237284904. The cubic root of 210442132 is about 594.8090454246.

Adding to 210442132 its reverse (231244012), we get a palindrome (441686144).

The spelling of 210442132 in words is "two hundred ten million, four hundred forty-two thousand, one hundred thirty-two".