210132009 has 16 divisors (see below), whose sum is σ = 312301440. Its totient is φ = 139640400.

The previous prime is 210131993. The next prime is 210132017. The reversal of 210132009 is 900231012.

It is a happy number.

It is not a de Polignac number, because 210132009 - 2⁴ = 210131993 is a prime.

It is a super-2 number, since 2×210132009² = 88310922412752162, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210131982 and 210132000.

It is not an unprimeable number, because it can be changed into a prime (210132029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3717 + ... + 20834.

It is an arithmetic number, because the mean of its divisors is an integer number (19518840).

Almost surely, 2^210132009 is an apocalyptic number.

It is an amenable number.

210132009 is a deficient number, since it is larger than the sum of its proper divisors (102169431).

210132009 is a wasteful number, since it uses less digits than its factorization.

210132009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24877 (or 24871 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 210132009 is about 14495.9307738413. The cubic root of 210132009 is about 594.5167169963.

The spelling of 210132009 in words is "two hundred ten million, one hundred thirty-two thousand, nine".