2217042 has 12 divisors (see below), whose sum is σ = 4803630. Its totient is φ = 739008.

The previous prime is 2217041. The next prime is 2217049. The reversal of 2217042 is 2407122.

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 576081 = 1281^2 + 759^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 123169 = 2217042 / (2 + 2 + 1 + 7 + 0 + 4 + 2).

It is a d-powerful number, because it can be written as 2⁷ + 2¹¹ + 1 + 7⁶ + 0 + 4³ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2217041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61567 + ... + 61602.

2^2217042 is an apocalyptic number.

2217042 is an abundant number, since it is smaller than the sum of its proper divisors (2586588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2217042 is a wasteful number, since it uses less digits than its factorization.

2217042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123177 (or 123174 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2217042 is about 1488.9734718926. The cubic root of 2217042 is about 130.3941097243.

The spelling of 2217042 in words is "two million, two hundred seventeen thousand, forty-two".