1040421534240 has 384 divisors, whose sum is σ = 3950174656512. Its totient is φ = 227065118720.

The previous prime is 1040421534239. The next prime is 1040421534247. The reversal of 1040421534240 is 424351240401.

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 = 1040421534198 and 1040421534207.

It is not an unprimeable number, because it can be changed into a prime (1040421534247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1812499 + ... + 2316461.

It is an arithmetic number, because the mean of its divisors is an integer number (10286913168).

Almost surely, 2^{1040421534240} is an apocalyptic number.

1040421534240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040421534240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975087328256).

1040421534240 is an abundant number, since it is smaller than the sum of its proper divisors (2909753122272).

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

1040421534240 is a wasteful number, since it uses less digits than its factorization.

1040421534240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504032 (or 504024 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 1040421534240 its reverse (424351240401), we get a palindrome (1464772774641).

The spelling of 1040421534240 in words is "one trillion, forty billion, four hundred twenty-one million, five hundred thirty-four thousand, two hundred forty".