1040243421321 has 32 divisors (see below), whose sum is σ = 1659759776640. Its totient is φ = 640106539200.

The previous prime is 1040243421277. The next prime is 1040243421337. The reversal of 1040243421321 is 1231243420401.

1040243421321 is a `hidden beast` number, since 1 + 0 + 402 + 43 + 4 + 213 + 2 + 1 = 666.

1040243421321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1040243421321 - 2⁹ = 1040243420809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1040243421521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5555851 + ... + 5740031.

It is an arithmetic number, because the mean of its divisors is an integer number (51867493020).

Almost surely, 2^{1040243421321} is an apocalyptic number.

It is an amenable number.

1040243421321 is a deficient number, since it is larger than the sum of its proper divisors (619516355319).

1040243421321 is a wasteful number, since it uses less digits than its factorization.

1040243421321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200294 (or 200288 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1040243421321 its reverse (1231243420401), we get a palindrome (2271486841722).

The spelling of 1040243421321 in words is "one trillion, forty billion, two hundred forty-three million, four hundred twenty-one thousand, three hundred twenty-one".