2043242 has 4 divisors (see below), whose sum is σ = 3064866. Its totient is φ = 1021620.

The previous prime is 2043199. The next prime is 2043257. The reversal of 2043242 is 2423402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2423402 = 2 ⋅1211701.

It can be written as a sum of positive squares in only one way, i.e., 1100401 + 942841 = 1049^2 + 971^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2043242.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510809 + ... + 510812.

2^2043242 is an apocalyptic number.

2043242 is a deficient number, since it is larger than the sum of its proper divisors (1021624).

2043242 is a wasteful number, since it uses less digits than its factorization.

2043242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021623.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 2043242 is about 1429.4201621637. The cubic root of 2043242 is about 126.8936634439.

Adding to 2043242 its reverse (2423402), we get a palindrome (4466644).

The spelling of 2043242 in words is "two million, forty-three thousand, two hundred forty-two".