2123017 has 4 divisors (see below), whose sum is σ = 2286340. Its totient is φ = 1959696.

The previous prime is 2122979. The next prime is 2123027. The reversal of 2123017 is 7103212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1320201 + 802816 = 1149^2 + 896^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81642 + ... + 81667.

It is an arithmetic number, because the mean of its divisors is an integer number (571585).

2^2123017 is an apocalyptic number.

It is an amenable number.

2123017 is a deficient number, since it is larger than the sum of its proper divisors (163323).

2123017 is a wasteful number, since it uses less digits than its factorization.

2123017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163322.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2123017 is about 1457.0576515705. The cubic root of 2123017 is about 128.5240760956.

Adding to 2123017 its reverse (7103212), we get a palindrome (9226229).

The spelling of 2123017 in words is "two million, one hundred twenty-three thousand, seventeen".