243401402 has 4 divisors (see below), whose sum is σ = 365102106. Its totient is φ = 121700700.

The previous prime is 243401363. The next prime is 243401413. The reversal of 243401402 is 204104342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243391201 + 10201 = 15601^2 + 101^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60850349 + ... + 60850352.

Almost surely, 2^243401402 is an apocalyptic number.

243401402 is a deficient number, since it is larger than the sum of its proper divisors (121700704).

243401402 is a wasteful number, since it uses less digits than its factorization.

243401402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121700703.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243401402 is about 15601.3269307453. The cubic root of 243401402 is about 624.3685586391.

Adding to 243401402 its reverse (204104342), we get a palindrome (447505744).

The spelling of 243401402 in words is "two hundred forty-three million, four hundred one thousand, four hundred two".