201243210 has 64 divisors (see below), whose sum is σ = 560259072. Its totient is φ = 45308736.

The previous prime is 201243197. The next prime is 201243233. The reversal of 201243210 is 12342102.

It is a super-2 number, since 2×201243210² = 80997659142208200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201243210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6919 + ... + 21221.

It is an arithmetic number, because the mean of its divisors is an integer number (8754048).

Almost surely, 2^201243210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201243210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280129536).

201243210 is an abundant number, since it is smaller than the sum of its proper divisors (359015862).

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

201243210 is a wasteful number, since it uses less digits than its factorization.

201243210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14387.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201243210 is about 14186.0216410381. The cubic root of 201243210 is about 586.0127682650.

Adding to 201243210 its reverse (12342102), we get a palindrome (213585312).

The spelling of 201243210 in words is "two hundred one million, two hundred forty-three thousand, two hundred ten".