210000007 has 4 divisors (see below), whose sum is σ = 240000016. Its totient is φ = 180000000.

The previous prime is 209999987. The next prime is 210000017. The reversal of 210000007 is 700000012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210000007 - 2⁷ = 209999879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 209999948 and 210000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210000017) 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 3 ways as a sum of consecutive naturals, for example, 14999994 + ... + 15000007.

It is an arithmetic number, because the mean of its divisors is an integer number (60000004).

Almost surely, 2^210000007 is an apocalyptic number.

210000007 is a deficient number, since it is larger than the sum of its proper divisors (30000009).

210000007 is an equidigital number, since it uses as much as digits as its factorization.

210000007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000008.

The product of its (nonzero) digits is 14, while the sum is 10.

The square root of 210000007 is about 14491.3769877124. The cubic root of 210000007 is about 594.3922018807.

Adding to 210000007 its reverse (700000012), we get a palindrome (910000019).

The spelling of 210000007 in words is "two hundred ten million, seven", and thus it is an aban number.