1040043013121 has 8 divisors (see below), whose sum is σ = 1208106170304. Its totient is φ = 876851251920.

The previous prime is 1040043013103. The next prime is 1040043013129. The reversal of 1040043013121 is 1213103400401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1040043013121 - 2⁶ = 1040043013057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1040043013093 and 1040043013102.

It is not an unprimeable number, because it can be changed into a prime (1040043013129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217848535 + ... + 1217849388.

It is an arithmetic number, because the mean of its divisors is an integer number (151013271288).

Almost surely, 2^{1040043013121} is an apocalyptic number.

It is an amenable number.

1040043013121 is a deficient number, since it is larger than the sum of its proper divisors (168063157183).

1040043013121 is an equidigital number, since it uses as much as digits as its factorization.

1040043013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435697991.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1040043013121 its reverse (1213103400401), we get a palindrome (2253146413522).

The spelling of 1040043013121 in words is "one trillion, forty billion, forty-three million, thirteen thousand, one hundred twenty-one".