1164021 has 8 divisors (see below), whose sum is σ = 1557024. Its totient is φ = 773520.

The previous prime is 1164001. The next prime is 1164029. The reversal of 1164021 is 1204611.

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

It is not a de Polignac number, because 1164021 - 2⁵ = 1163989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164029) 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 7 ways as a sum of consecutive naturals, for example, 1431 + ... + 2091.

It is an arithmetic number, because the mean of its divisors is an integer number (194628).

2^1164021 is an apocalyptic number.

It is an amenable number.

1164021 is a deficient number, since it is larger than the sum of its proper divisors (393003).

1164021 is an equidigital number, since it uses as much as digits as its factorization.

1164021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1164021 is about 1078.8980489370. The cubic root of 1164021 is about 105.1930236281.

Adding to 1164021 its reverse (1204611), we get a palindrome (2368632).

It can be divided in two parts, 116402 and 1, that added together give a triangular number (116403 = T₄₈₂).

The spelling of 1164021 in words is "one million, one hundred sixty-four thousand, twenty-one".