210021049 has 8 divisors (see below), whose sum is σ = 240193088. Its totient is φ = 179891280.

The previous prime is 210021047. The next prime is 210021067. The reversal of 210021049 is 940120012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210021049 - 2¹ = 210021047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021047) 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 7 ways as a sum of consecutive naturals, for example, 919 + ... + 20515.

It is an arithmetic number, because the mean of its divisors is an integer number (30024136).

Almost surely, 2^210021049 is an apocalyptic number.

It is an amenable number.

210021049 is a deficient number, since it is larger than the sum of its proper divisors (30172039).

210021049 is a wasteful number, since it uses less digits than its factorization.

210021049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21135.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 210021049 is about 14492.1029874894. The cubic root of 210021049 is about 594.4120539165.

The spelling of 210021049 in words is "two hundred ten million, twenty-one thousand, forty-nine".