2135021 has 16 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 1719168.

The previous prime is 2135017. The next prime is 2135027. The reversal of 2135021 is 1205312.

It is a happy number.

2135021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2135021 - 2² = 2135017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2134987 and 2135005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14255 + ... + 14403.

It is an arithmetic number, because the mean of its divisors is an integer number (162000).

2^2135021 is an apocalyptic number.

It is an amenable number.

2135021 is a deficient number, since it is larger than the sum of its proper divisors (456979).

2135021 is a wasteful number, since it uses less digits than its factorization.

2135021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 2135021 is about 1461.1711056546. The cubic root of 2135021 is about 128.7658553383.

The spelling of 2135021 in words is "two million, one hundred thirty-five thousand, twenty-one".