243203413040 has 120 divisors (see below), whose sum is σ = 696458272032. Its totient is φ = 78479063040.

The previous prime is 243203413021. The next prime is 243203413043. The reversal of 243203413040 is 40314302342.

It is a super-2 number, since 2×243203413040² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243203413043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1758116 + ... + 1891395.

Almost surely, 2^243203413040 is an apocalyptic number.

243203413040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243203413040 is an abundant number, since it is smaller than the sum of its proper divisors (453254858992).

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

243203413040 is a wasteful number, since it uses less digits than its factorization.

243203413040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3649555 (or 3649542 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 243203413040 its reverse (40314302342), we get a palindrome (283517715382).

The spelling of 243203413040 in words is "two hundred forty-three billion, two hundred three million, four hundred thirteen thousand, forty".