243421402 has 32 divisors (see below), whose sum is σ = 443076480. Its totient is φ = 97912320.

The previous prime is 243421379. The next prime is 243421411. The reversal of 243421402 is 204124342.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98502 + ... + 100942.

It is an arithmetic number, because the mean of its divisors is an integer number (13846140).

Almost surely, 2^243421402 is an apocalyptic number.

243421402 is a deficient number, since it is larger than the sum of its proper divisors (199655078).

243421402 is a wasteful number, since it uses less digits than its factorization.

243421402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 243421402 is about 15601.9678886992. The cubic root of 243421402 is about 624.3856593748.

Adding to 243421402 its reverse (204124342), we get a palindrome (447545744).

The spelling of 243421402 in words is "two hundred forty-three million, four hundred twenty-one thousand, four hundred two".