1040344143240 has 32 divisors (see below), whose sum is σ = 3121032430080. Its totient is φ = 277425104832.

The previous prime is 1040344143227. The next prime is 1040344143257. The reversal of 1040344143240 is 423414430401.

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 = 1040344143198 and 1040344143207.

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, 4334767144 + ... + 4334767383.

It is an arithmetic number, because the mean of its divisors is an integer number (97532263440).

Almost surely, 2^{1040344143240} is an apocalyptic number.

1040344143240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040344143240 is an abundant number, since it is smaller than the sum of its proper divisors (2080688286840).

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

1040344143240 is a wasteful number, since it uses less digits than its factorization.

1040344143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8669534541 (or 8669534537 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1040344143240 its reverse (423414430401), we get a palindrome (1463758573641).

The spelling of 1040344143240 in words is "one trillion, forty billion, three hundred forty-four million, one hundred forty-three thousand, two hundred forty".