243102402 has 24 divisors (see below), whose sum is σ = 528634236. Its totient is φ = 80739936.

The previous prime is 243102383. The next prime is 243102413. The reversal of 243102402 is 204201342.

It can be written as a sum of positive squares in 2 ways, for example, as 213715161 + 29387241 = 14619^2 + 5421^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19393 + ... + 29364.

Almost surely, 2^243102402 is an apocalyptic number.

243102402 is an abundant number, since it is smaller than the sum of its proper divisors (285531834).

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

243102402 is a wasteful number, since it uses less digits than its factorization.

243102402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49042 (or 49039 counting only the distinct ones).

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

The square root of 243102402 is about 15591.7414678412. The cubic root of 243102402 is about 624.1127908786.

Adding to 243102402 its reverse (204201342), we get a palindrome (447303744).

The spelling of 243102402 in words is "two hundred forty-three million, one hundred two thousand, four hundred two".