210253242 has 16 divisors (see below), whose sum is σ = 422145792. Its totient is φ = 69811200.

The previous prime is 210253237. The next prime is 210253243. The reversal of 210253242 is 242352012.

It is not an unprimeable number, because it can be changed into a prime (210253243) 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, 66634 + ... + 69717.

It is an arithmetic number, because the mean of its divisors is an integer number (26384112).

Almost surely, 2^210253242 is an apocalyptic number.

210253242 is an abundant number, since it is smaller than the sum of its proper divisors (211892550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210253242 is a wasteful number, since it uses less digits than its factorization.

210253242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136613.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 210253242 is about 14500.1117926725. Note that the first 3 decimals coincide. The cubic root of 210253242 is about 594.6310279780.

The spelling of 210253242 in words is "two hundred ten million, two hundred fifty-three thousand, two hundred forty-two".