2026021 has 2 divisors, whose sum is σ = 2026022. Its totient is φ = 2026020.

The previous prime is 2025979. The next prime is 2026061. The reversal of 2026021 is 1206202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102500 + 923521 = 1050^2 + 961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2026021 is a prime.

It is a super-2 number, since 2×2026021² = 8209522184882, which contains 22 as substring.

It is a Chen prime.

2026021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2025992 and 2026010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2026061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013010 + 1013011.

It is an arithmetic number, because the mean of its divisors is an integer number (1013011).

2^2026021 is an apocalyptic number.

It is an amenable number.

2026021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026021 is an equidigital number, since it uses as much as digits as its factorization.

2026021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2026021 is about 1423.3836447002. The cubic root of 2026021 is about 126.5361590561.

The spelling of 2026021 in words is "two million, twenty-six thousand, twenty-one".