801121043 has 4 divisors (see below), whose sum is σ = 801423648. Its totient is φ = 800818440.

The previous prime is 801121037. The next prime is 801121051. The reversal of 801121043 is 340121108.

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

It is a cyclic number.

It is not a de Polignac number, because 801121043 - 2⁸ = 801120787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801321043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147296 + ... + 152637.

It is an arithmetic number, because the mean of its divisors is an integer number (200355912).

Almost surely, 2^801121043 is an apocalyptic number.

801121043 is a deficient number, since it is larger than the sum of its proper divisors (302605).

801121043 is a wasteful number, since it uses less digits than its factorization.

801121043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302604.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 801121043 is about 28304.0817374456. The cubic root of 801121043 is about 928.7511827256.

The spelling of 801121043 in words is "eight hundred one million, one hundred twenty-one thousand, forty-three".