2040442 has 8 divisors (see below), whose sum is σ = 3240756. Its totient is φ = 960192.

The previous prime is 2040433. The next prime is 2040443. The reversal of 2040442 is 2440402.

It can be written as a sum of positive squares in 2 ways, for example, as 1879641 + 160801 = 1371^2 + 401^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2040443) 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, 29973 + ... + 30040.

2^2040442 is an apocalyptic number.

2040442 is a deficient number, since it is larger than the sum of its proper divisors (1200314).

2040442 is a wasteful number, since it uses less digits than its factorization.

2040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60032.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2040442 is about 1428.4404082775. The cubic root of 2040442 is about 126.8356731389.

Adding to 2040442 its reverse (2440402), we get a palindrome (4480844).

The spelling of 2040442 in words is "two million, forty thousand, four hundred forty-two".