1160021 has 4 divisors (see below), whose sum is σ = 1163712. Its totient is φ = 1156332.

The previous prime is 1160009. The next prime is 1160039. The reversal of 1160021 is 1200611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1160021 - 2¹⁸ = 897877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1159984 and 1160011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325 + ... + 2018.

It is an arithmetic number, because the mean of its divisors is an integer number (290928).

2^1160021 is an apocalyptic number.

It is an amenable number.

1160021 is a deficient number, since it is larger than the sum of its proper divisors (3691).

1160021 is an equidigital number, since it uses as much as digits as its factorization.

1160021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1160021 is about 1077.0427103880. The cubic root of 1160021 is about 105.0723914997.

Adding to 1160021 its reverse (1200611), we get a palindrome (2360632).

The spelling of 1160021 in words is "one million, one hundred sixty thousand, twenty-one".