243400122400 has 36 divisors (see below), whose sum is σ = 594200550762. Its totient is φ = 97360048640.

The previous prime is 243400122397. The next prime is 243400122467. The reversal of 243400122400 is 4221004342.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 106414268944 + 136985853456 = 326212^2 + 370116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152124277 + ... + 152125876.

Almost surely, 2^243400122400 is an apocalyptic number.

243400122400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243400122400 is an abundant number, since it is smaller than the sum of its proper divisors (350800428362).

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

243400122400 is a wasteful number, since it uses less digits than its factorization.

243400122400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304250173 (or 304250160 counting only the distinct ones).

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

Adding to 243400122400 its reverse (4221004342), we get a palindrome (247621126742).

The spelling of 243400122400 in words is "two hundred forty-three billion, four hundred million, one hundred twenty-two thousand, four hundred".