243234102040 has 32 divisors (see below), whose sum is σ = 557602710480. Its totient is φ = 95457910912.

The previous prime is 243234102031. The next prime is 243234102077. The reversal of 243234102040 is 40201432342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243234101996 and 243234102014.

It is a congruent number.

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, 57364414 + ... + 57368653.

Almost surely, 2^243234102040 is an apocalyptic number.

243234102040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243234102040 is an abundant number, since it is smaller than the sum of its proper divisors (314368608440).

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

243234102040 is a wasteful number, since it uses less digits than its factorization.

243234102040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114733131 (or 114733127 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 243234102040 its reverse (40201432342), we get a palindrome (283435534382).

The spelling of 243234102040 in words is "two hundred forty-three billion, two hundred thirty-four million, one hundred two thousand, forty".