2105020 has 12 divisors (see below), whose sum is σ = 4420584. Its totient is φ = 842000.

The previous prime is 2105009. The next prime is 2105027. The reversal of 2105020 is 205012.

It is a super-2 number, since 2×2105020² = 8862218400800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2104988 and 2105006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52606 + ... + 52645.

It is an arithmetic number, because the mean of its divisors is an integer number (368382).

2^2105020 is an apocalyptic number.

2105020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2105020 is an abundant number, since it is smaller than the sum of its proper divisors (2315564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2105020 is a wasteful number, since it uses less digits than its factorization.

2105020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105260 (or 105258 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 2105020 is about 1450.8687052935. The cubic root of 2105020 is about 128.1598750988.

The spelling of 2105020 in words is "two million, one hundred five thousand, twenty".