210043242 has 12 divisors (see below), whose sum is σ = 455093730. Its totient is φ = 70014408.

The previous prime is 210043241. The next prime is 210043277. The reversal of 210043242 is 242340012.

210043242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 141633801 + 68409441 = 11901^2 + 8271^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11669069 = 210043242 / (2 + 1 + 0 + 0 + 4 + 3 + 2 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (210043241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5834517 + ... + 5834552.

Almost surely, 2^210043242 is an apocalyptic number.

210043242 is an abundant number, since it is smaller than the sum of its proper divisors (245050488).

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

210043242 is a wasteful number, since it uses less digits than its factorization.

210043242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11669077 (or 11669074 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 210043242 is about 14492.8686601376. The cubic root of 210043242 is about 594.4329904244.

Adding to 210043242 its reverse (242340012), we get a palindrome (452383254).

The spelling of 210043242 in words is "two hundred ten million, forty-three thousand, two hundred forty-two".