2124217 has 4 divisors (see below), whose sum is σ = 2131236. Its totient is φ = 2117200.

The previous prime is 2124197. The next prime is 2124223. The reversal of 2124217 is 7124212.

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 423801 + 1700416 = 651^2 + 1304^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124217 - 2¹⁵ = 2091449 is a prime.

It is a d-powerful number, because it can be written as 2¹¹ + 1 + 2¹³ + 4² + 2²¹ + 1 + 7⁵ .

It is a Duffinian number.

2124217 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2124194 and 2124203.

It is not an unprimeable number, because it can be changed into a prime (2124247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034 + ... + 3667.

It is an arithmetic number, because the mean of its divisors is an integer number (532809).

2^2124217 is an apocalyptic number.

It is an amenable number.

2124217 is a deficient number, since it is larger than the sum of its proper divisors (7019).

2124217 is an equidigital number, since it uses as much as digits as its factorization.

2124217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018.

The product of its digits is 224, while the sum is 19.

The square root of 2124217 is about 1457.4693821827. The cubic root of 2124217 is about 128.5482868990.

Adding to 2124217 its reverse (7124212), we get a palindrome (9248429).

The spelling of 2124217 in words is "two million, one hundred twenty-four thousand, two hundred seventeen".