1240513540540 has 48 divisors (see below), whose sum is σ = 2615036949504. Its totient is φ = 494309044800.

The previous prime is 1240513540481. The next prime is 1240513540559. The reversal of 1240513540540 is 450453150421.

It is a junction number, because it is equal to n+sod(n) for n = 1240513540496 and 1240513540505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81460407 + ... + 81475633.

It is an arithmetic number, because the mean of its divisors is an integer number (54479936448).

Almost surely, 2^{1240513540540} is an apocalyptic number.

1240513540540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240513540540 is an abundant number, since it is smaller than the sum of its proper divisors (1374523408964).

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

1240513540540 is a wasteful number, since it uses less digits than its factorization.

1240513540540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30538 (or 30536 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 1240513540540 its reverse (450453150421), we get a palindrome (1690966690961).

The spelling of 1240513540540 in words is "one trillion, two hundred forty billion, five hundred thirteen million, five hundred forty thousand, five hundred forty".