210142672 has 20 divisors (see below), whose sum is σ = 408328900. Its totient is φ = 104767488.

The previous prime is 210142663. The next prime is 210142693. The reversal of 210142672 is 276241012.

It can be written as a sum of positive squares in 2 ways, for example, as 103144336 + 106998336 = 10156^2 + 10344^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13233 + ... + 24400.

It is an arithmetic number, because the mean of its divisors is an integer number (20416445).

Almost surely, 2^210142672 is an apocalyptic number.

It is an amenable number.

210142672 is a deficient number, since it is larger than the sum of its proper divisors (198186228).

210142672 is a wasteful number, since it uses less digits than its factorization.

210142672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37990 (or 37984 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 210142672 is about 14496.2985620468. The cubic root of 210142672 is about 594.5267729362.

Adding to 210142672 its reverse (276241012), we get a palindrome (486383684).

The spelling of 210142672 in words is "two hundred ten million, one hundred forty-two thousand, six hundred seventy-two".