243870102 has 80 divisors (see below), whose sum is σ = 632282112. Its totient is φ = 68811120.

The previous prime is 243870101. The next prime is 243870167. The reversal of 243870102 is 201078342.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243870101) 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 39 ways as a sum of consecutive naturals, for example, 92827 + ... + 95417.

Almost surely, 2^243870102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243870102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316141056).

243870102 is an abundant number, since it is smaller than the sum of its proper divisors (388412010).

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

243870102 is a wasteful number, since it uses less digits than its factorization.

243870102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695 (or 2686 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 243870102 is about 15616.3408646200. The cubic root of 243870102 is about 624.7690683901.

The spelling of 243870102 in words is "two hundred forty-three million, eight hundred seventy thousand, one hundred two".