2142244 has 18 divisors (see below), whose sum is σ = 4060770. Its totient is φ = 988416.

The previous prime is 2142241. The next prime is 2142251. The reversal of 2142244 is 4422412.

It can be written as a sum of positive squares in 3 ways, for example, as 68644 + 2073600 = 262^2 + 1440^2 .

It is a nude number because it is divisible by every one of its digits.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2142241) 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, 909 + ... + 2260.

2^2142244 is an apocalyptic number.

It is an amenable number.

2142244 is a deficient number, since it is larger than the sum of its proper divisors (1918526).

2142244 is a wasteful number, since it uses less digits than its factorization.

2142244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199 (or 3184 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 2142244 is about 1463.6406662839. The cubic root of 2142244 is about 128.9109013577.

Adding to 2142244 its reverse (4422412), we get a palindrome (6564656).

The spelling of 2142244 in words is "two million, one hundred forty-two thousand, two hundred forty-four".