2029021 has 2 divisors, whose sum is σ = 2029022. Its totient is φ = 2029020.

The previous prime is 2029019. The next prime is 2029033. The reversal of 2029021 is 1209202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1466521 + 562500 = 1211^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2029021 - 2¹ = 2029019 is a prime.

Together with 2029019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2028986 and 2029004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2029051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014510 + 1014511.

It is an arithmetic number, because the mean of its divisors is an integer number (1014511).

2^2029021 is an apocalyptic number.

It is an amenable number.

2029021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2029021 is an equidigital number, since it uses as much as digits as its factorization.

2029021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2029021 is about 1424.4370817976. The cubic root of 2029021 is about 126.5985837569.

The spelling of 2029021 in words is "two million, twenty-nine thousand, twenty-one".