1240001304540 has 48 divisors (see below), whose sum is σ = 3472539638400. Its totient is φ = 330615968320.

The previous prime is 1240001304481. The next prime is 1240001304547. The reversal of 1240001304540 is 454031000421.

It is a super-2 number, since 2×1240001304540² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240001304540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240001304547) 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, 1202490 + ... + 1981409.

It is an arithmetic number, because the mean of its divisors is an integer number (72344575800).

Almost surely, 2^{1240001304540} is an apocalyptic number.

1240001304540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240001304540 is an abundant number, since it is smaller than the sum of its proper divisors (2232538333860).

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

1240001304540 is a wasteful number, since it uses less digits than its factorization.

1240001304540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190402 (or 3190400 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 1240001304540 its reverse (454031000421), we get a palindrome (1694032304961).

The spelling of 1240001304540 in words is "one trillion, two hundred forty billion, one million, three hundred four thousand, five hundred forty".