210421475 has 12 divisors (see below), whose sum is σ = 284643240. Its totient is φ = 153033600.

The previous prime is 210421441. The next prime is 210421483. The reversal of 210421475 is 574124012.

210421475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-210421475 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382310 + ... + 382859.

It is an arithmetic number, because the mean of its divisors is an integer number (23720270).

Almost surely, 2^210421475 is an apocalyptic number.

210421475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

210421475 is a deficient number, since it is larger than the sum of its proper divisors (74221765).

210421475 is a wasteful number, since it uses less digits than its factorization.

210421475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765190 (or 765185 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 210421475 is about 14505.9117259137. The cubic root of 210421475 is about 594.7895826355.

Adding to 210421475 its reverse (574124012), we get a palindrome (784545487).

The spelling of 210421475 in words is "two hundred ten million, four hundred twenty-one thousand, four hundred seventy-five".