4240400242440 has 64 divisors (see below), whose sum is σ = 12727296927360. Its totient is φ = 1130231513600.

The previous prime is 4240400242427. The next prime is 4240400242447. The reversal of 4240400242440 is 442420040424.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 4240400242398 and 4240400242407.

It is not an unprimeable number, because it can be changed into a prime (4240400242447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8215461 + ... + 8716340.

It is an arithmetic number, because the mean of its divisors is an integer number (198864014490).

Almost surely, 2^{4240400242440} is an apocalyptic number.

4240400242440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4240400242440 is an abundant number, since it is smaller than the sum of its proper divisors (8486896684920).

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

4240400242440 is a wasteful number, since it uses less digits than its factorization.

4240400242440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16933902 (or 16933898 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 4240400242440 its reverse (442420040424), we get a palindrome (4682820282864).

The spelling of 4240400242440 in words is "four trillion, two hundred forty billion, four hundred million, two hundred forty-two thousand, four hundred forty".