1021085 has 16 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 720192.

The previous prime is 1021081. The next prime is 1021087. The reversal of 1021085 is 5801201.

It is a cyclic number.

It is not a de Polignac number, because 1021085 - 2² = 1021081 is a prime.

It is a super-2 number, since 2×1021085² = 2085229154450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1154 + ... + 1836.

It is an arithmetic number, because the mean of its divisors is an integer number (86184).

2^1021085 is an apocalyptic number.

It is an amenable number.

1021085 is a deficient number, since it is larger than the sum of its proper divisors (357859).

1021085 is a wasteful number, since it uses less digits than its factorization.

1021085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1021085 is about 1010.4875061078. The cubic root of 1021085 is about 100.6979506490.

Adding to 1021085 its reverse (5801201), we get a palindrome (6822286).

The spelling of 1021085 in words is "one million, twenty-one thousand, eighty-five".