243120353402 has 8 divisors (see below), whose sum is σ = 364776687156. Its totient is φ = 121528124352.

The previous prime is 243120353353. The next prime is 243120353447. The reversal of 243120353402 is 204353021342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 215945160601 + 27175192801 = 464699^2 + 164849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16016693 + ... + 16031864.

Almost surely, 2^243120353402 is an apocalyptic number.

243120353402 is a deficient number, since it is larger than the sum of its proper divisors (121656333754).

243120353402 is a wasteful number, since it uses less digits than its factorization.

243120353402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32052352.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 243120353402 its reverse (204353021342), we get a palindrome (447473374744).

The spelling of 243120353402 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-three thousand, four hundred two".