2076421 has 2 divisors, whose sum is σ = 2076422. Its totient is φ = 2076420.

The previous prime is 2076419. The next prime is 2076433. The reversal of 2076421 is 1246702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 45796 = 1425^2 + 214^2 .

It is a cyclic number.

It is not a de Polignac number, because 2076421 - 2¹ = 2076419 is a prime.

Together with 2076419, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2076392 and 2076401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2076461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1038210 + 1038211.

It is an arithmetic number, because the mean of its divisors is an integer number (1038211).

2^2076421 is an apocalyptic number.

It is an amenable number.

2076421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2076421 is an equidigital number, since it uses as much as digits as its factorization.

2076421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2076421 is about 1440.9791809738. The cubic root of 2076421 is about 127.5768292554.

The spelling of 2076421 in words is "two million, seventy-six thousand, four hundred twenty-one".