2140069 has 2 divisors, whose sum is σ = 2140070. Its totient is φ = 2140068.

The previous prime is 2140057. The next prime is 2140091. The reversal of 2140069 is 9600412.

It is an a-pointer prime, because the next prime (2140091) can be obtained adding 2140069 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 263169 = 1370^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 2140069 - 2¹⁹ = 1615781 is a prime.

It is a super-2 number, since 2×2140069² = 9159790649522, which contains 22 as substring.

It is a Chen prime.

2140069 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2140049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070034 + 1070035.

It is an arithmetic number, because the mean of its divisors is an integer number (1070035).

2^2140069 is an apocalyptic number.

It is an amenable number.

2140069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140069 is an equidigital number, since it uses as much as digits as its factorization.

2140069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2140069 is about 1462.8974673572. The cubic root of 2140069 is about 128.8672592464.

The spelling of 2140069 in words is "two million, one hundred forty thousand, sixty-nine".