210243054 has 64 divisors (see below), whose sum is σ = 500797440. Its totient is φ = 57576960.

The previous prime is 210243053. The next prime is 210243071. The reversal of 210243054 is 450342012.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 210243054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243053) 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 31 ways as a sum of consecutive naturals, for example, 146412 + ... + 147840.

It is an arithmetic number, because the mean of its divisors is an integer number (7824960).

Almost surely, 2^210243054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210243054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250398720).

210243054 is an abundant number, since it is smaller than the sum of its proper divisors (290554386).

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

210243054 is a wasteful number, since it uses less digits than its factorization.

210243054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585.

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

The square root of 210243054 is about 14499.7604807804. The cubic root of 210243054 is about 594.6214233718.

Adding to 210243054 its reverse (450342012), we get a palindrome (660585066).

The spelling of 210243054 in words is "two hundred ten million, two hundred forty-three thousand, fifty-four".