2068421 has 2 divisors, whose sum is σ = 2068422. Its totient is φ = 2068420.

The previous prime is 2068403. The next prime is 2068427. The reversal of 2068421 is 1248602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 923521 = 1070^2 + 961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2068421 is a prime.

It is equal to p₁₅₃₆₅₃ and since 2068421 and 153653 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2068427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1034210 + 1034211.

It is an arithmetic number, because the mean of its divisors is an integer number (1034211).

2^2068421 is an apocalyptic number.

It is an amenable number.

2068421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2068421 is an equidigital number, since it uses as much as digits as its factorization.

2068421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2068421 is about 1438.2006118758. The cubic root of 2068421 is about 127.4127764321.

The spelling of 2068421 in words is "two million, sixty-eight thousand, four hundred twenty-one".