1240404008532 has 24 divisors (see below), whose sum is σ = 3116912637216. Its totient is φ = 381662771808.

The previous prime is 1240404008497. The next prime is 1240404008561. The reversal of 1240404008532 is 2358004040421.

It is a junction number, because it is equal to n+sod(n) for n = 1240404008493 and 1240404008502.

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, 3975653718 + ... + 3975654029.

It is an arithmetic number, because the mean of its divisors is an integer number (129871359884).

Almost surely, 2^{1240404008532} is an apocalyptic number.

1240404008532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1240404008532 is an abundant number, since it is smaller than the sum of its proper divisors (1876508628684).

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

1240404008532 is a wasteful number, since it uses less digits than its factorization.

1240404008532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7951307767 (or 7951307765 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 1240404008532 its reverse (2358004040421), we get a palindrome (3598408048953).

The spelling of 1240404008532 in words is "one trillion, two hundred forty billion, four hundred four million, eight thousand, five hundred thirty-two".