210045929 has 4 divisors (see below), whose sum is σ = 215722884. Its totient is φ = 204368976.

The previous prime is 210045923. The next prime is 210045989. The reversal of 210045929 is 929540012.

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

It can be written as a sum of positive squares in 2 ways, for example, as 193627225 + 16418704 = 13915^2 + 4052^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210045929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210045895 and 210045904.

It is not an unprimeable number, because it can be changed into a prime (210045923) 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 3 ways as a sum of consecutive naturals, for example, 2838422 + ... + 2838495.

It is an arithmetic number, because the mean of its divisors is an integer number (53930721).

Almost surely, 2^210045929 is an apocalyptic number.

It is an amenable number.

210045929 is a deficient number, since it is larger than the sum of its proper divisors (5676955).

210045929 is an equidigital number, since it uses as much as digits as its factorization.

210045929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5676954.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 210045929 is about 14492.9613606054. The cubic root of 210045929 is about 594.4355251956.

The spelling of 210045929 in words is "two hundred ten million, forty-five thousand, nine hundred twenty-nine".