1020105 has 12 divisors (see below), whose sum is σ = 1768260. Its totient is φ = 544032.

The previous prime is 1020101. The next prime is 1020109. The reversal of 1020105 is 5010201.

It is a happy number.

1020105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1020101) and next prime (1020109).

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 278784 = 861^2 + 528^2 .

It is not a de Polignac number, because 1020105 - 2² = 1020101 is a prime.

It is a super-2 number, since 2×1020105² = 2081228422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

1020105 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1020101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11290 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (147355).

2^1020105 is an apocalyptic number.

1020105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020105 is a deficient number, since it is larger than the sum of its proper divisors (748155).

1020105 is a wasteful number, since it uses less digits than its factorization.

1020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22680 (or 22677 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 9.

The square root of 1020105 is about 1010.0024752445. The cubic root of 1020105 is about 100.6657249350.

Adding to 1020105 its reverse (5010201), we get a palindrome (6030306).

The spelling of 1020105 in words is "one million, twenty thousand, one hundred five".