243102100240 has 40 divisors (see below), whose sum is σ = 575876777688. Its totient is φ = 95406105600.

The previous prime is 243102100211. The next prime is 243102100271. The reversal of 243102100240 is 42001201342.

It can be written as a sum of positive squares in 4 ways, for example, as 2449062144 + 240653038096 = 49488^2 + 490564^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×243102100240² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28663461 + ... + 28671940.

Almost surely, 2^243102100240 is an apocalyptic number.

243102100240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243102100240 is an abundant number, since it is smaller than the sum of its proper divisors (332774677448).

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

243102100240 is a wasteful number, since it uses less digits than its factorization.

243102100240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57335467 (or 57335461 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 243102100240 its reverse (42001201342), we get a palindrome (285103301582).

The spelling of 243102100240 in words is "two hundred forty-three billion, one hundred two million, one hundred thousand, two hundred forty".