1240324535240 has 64 divisors (see below), whose sum is σ = 3299385484800. Its totient is φ = 410590188288.

The previous prime is 1240324535227. The next prime is 1240324535291. The reversal of 1240324535240 is 425354230421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1240324535240.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76366544 + ... + 76382783.

It is an arithmetic number, because the mean of its divisors is an integer number (51552898200).

Almost surely, 2^{1240324535240} is an apocalyptic number.

1240324535240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240324535240 is an abundant number, since it is smaller than the sum of its proper divisors (2059060949560).

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

1240324535240 is a wasteful number, since it uses less digits than its factorization.

1240324535240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152749374 (or 152749370 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 1240324535240 its reverse (425354230421), we get a palindrome (1665678765661).

The spelling of 1240324535240 in words is "one trillion, two hundred forty billion, three hundred twenty-four million, five hundred thirty-five thousand, two hundred forty".