1043013121 has 4 divisors (see below), whose sum is σ = 1104366852. Its totient is φ = 981659392.

The previous prime is 1043013079. The next prime is 1043013137. The reversal of 1043013121 is 1213103401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 866654721 + 176358400 = 29439^2 + 13280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043013121 - 2²⁵ = 1009458689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1043013095 and 1043013104.

It is not an unprimeable number, because it can be changed into a prime (1043013421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30676840 + ... + 30676873.

It is an arithmetic number, because the mean of its divisors is an integer number (276091713).

Almost surely, 2^1043013121 is an apocalyptic number.

It is an amenable number.

1043013121 is a deficient number, since it is larger than the sum of its proper divisors (61353731).

1043013121 is an equidigital number, since it uses as much as digits as its factorization.

1043013121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61353730.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1043013121 is about 32295.7136629615. The cubic root of 1043013121 is about 1014.1369129280.

Adding to 1043013121 its reverse (1213103401), we get a palindrome (2256116522).

The spelling of 1043013121 in words is "one billion, forty-three million, thirteen thousand, one hundred twenty-one".