3146021 has 2 divisors, whose sum is σ = 3146022. Its totient is φ = 3146020.

The previous prime is 3145997. The next prime is 3146023. The reversal of 3146021 is 1206413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3062500 + 83521 = 1750^2 + 289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3146021 is a prime.

Together with 3146023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3146023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573010 + 1573011.

It is an arithmetic number, because the mean of its divisors is an integer number (1573011).

Almost surely, 2^3146021 is an apocalyptic number.

It is an amenable number.

3146021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3146021 is an equidigital number, since it uses as much as digits as its factorization.

3146021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3146021 is about 1773.7026244554. The cubic root of 3146021 is about 146.5279720765.

The spelling of 3146021 in words is "three million, one hundred forty-six thousand, twenty-one".