1086021 has 32 divisors (see below), whose sum is σ = 1776000. Its totient is φ = 653184.

The previous prime is 1085989. The next prime is 1086031. The reversal of 1086021 is 1206801.

It is not a de Polignac number, because 1086021 - 2⁵ = 1085989 is a prime.

It is a super-2 number, since 2×1086021² = 2358883224882, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1085985 and 1086003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1086031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14841 + ... + 14913.

It is an arithmetic number, because the mean of its divisors is an integer number (55500).

2^1086021 is an apocalyptic number.

It is an amenable number.

1086021 is a deficient number, since it is larger than the sum of its proper divisors (689979).

1086021 is a wasteful number, since it uses less digits than its factorization.

1086021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1086021 is about 1042.1233132408. The cubic root of 1086021 is about 102.7888658978.

The spelling of 1086021 in words is "one million, eighty-six thousand, twenty-one".