243201402 has 36 divisors (see below), whose sum is σ = 550864314. Its totient is φ = 77539440.

The previous prime is 243201397. The next prime is 243201419. The reversal of 243201402 is 204102342.

243201402 is a `hidden beast` number, since 243 + 20 + 1 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211964481 + 31236921 = 14559^2 + 5589^2 .

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 17 ways as a sum of consecutive naturals, for example, 3249 + ... + 22292.

Almost surely, 2^243201402 is an apocalyptic number.

243201402 is an abundant number, since it is smaller than the sum of its proper divisors (307662912).

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

243201402 is a wasteful number, since it uses less digits than its factorization.

243201402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25595 (or 25569 counting only the distinct ones).

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

The square root of 243201402 is about 15594.9159023061. The cubic root of 243201402 is about 624.1974997370.

Adding to 243201402 its reverse (204102342), we get a palindrome (447303744).

The spelling of 243201402 in words is "two hundred forty-three million, two hundred one thousand, four hundred two".