2102069 has 2 divisors, whose sum is σ = 2102070. Its totient is φ = 2102068.

The previous prime is 2102057. The next prime is 2102083. The reversal of 2102069 is 9602012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067844 + 34225 = 1438^2 + 185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102069 - 2¹⁶ = 2036533 is a prime.

It is a super-2 number, since 2×2102069² = 8837388161522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051034 + 1051035.

It is an arithmetic number, because the mean of its divisors is an integer number (1051035).

2^2102069 is an apocalyptic number.

It is an amenable number.

2102069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102069 is an equidigital number, since it uses as much as digits as its factorization.

2102069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 2102069 is about 1449.8513716930. The cubic root of 2102069 is about 128.0999585405.

The spelling of 2102069 in words is "two million, one hundred two thousand, sixty-nine".