2123020 has 24 divisors (see below), whose sum is σ = 4506768. Its totient is φ = 840000.

The previous prime is 2122979. The next prime is 2123027. The reversal of 2123020 is 203212.

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

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 2122988 and 2123006.

It is not an unprimeable number, because it can be changed into a prime (2123027) 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 7 ways as a sum of consecutive naturals, for example, 1495 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (187782).

2^2123020 is an apocalyptic number.

2123020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123020 is an abundant number, since it is smaller than the sum of its proper divisors (2383748).

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

2123020 is a wasteful number, since it uses less digits than its factorization.

2123020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1159 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2123020 is about 1457.0586810421. The cubic root of 2123020 is about 128.5241366340.

Adding to 2123020 its reverse (203212), we get a palindrome (2326232).

The spelling of 2123020 in words is "two million, one hundred twenty-three thousand, twenty".