2036421 has 20 divisors (see below), whose sum is σ = 3144064. Its totient is φ = 1312200.

The previous prime is 2036393. The next prime is 2036423. The reversal of 2036421 is 1246302.

It is a happy number.

2036421 is a `hidden beast` number, since 20 + 3 + 642 + 1 = 666.

It is not a de Polignac number, because 2036421 - 2⁶ = 2036357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2036394 and 2036403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2036423) 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 19 ways as a sum of consecutive naturals, for example, 2106 + ... + 2916.

2^2036421 is an apocalyptic number.

It is an amenable number.

2036421 is a deficient number, since it is larger than the sum of its proper divisors (1107643).

2036421 is an equidigital number, since it uses as much as digits as its factorization.

2036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2036421 is about 1427.0322350949. The cubic root of 2036421 is about 126.7523020485.

The spelling of 2036421 in words is "two million, thirty-six thousand, four hundred twenty-one".