2102040442 has 8 divisors (see below), whose sum is σ = 3154760532. Its totient is φ = 1050453600.

The previous prime is 2102040431. The next prime is 2102040443. The reversal of 2102040442 is 2440402012.

It can be written as a sum of positive squares in 2 ways, for example, as 2049463441 + 52577001 = 45271^2 + 7251^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2102040443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278659 + ... + 286102.

Almost surely, 2^2102040442 is an apocalyptic number.

2102040442 is a deficient number, since it is larger than the sum of its proper divisors (1052720090).

2102040442 is a wasteful number, since it uses less digits than its factorization.

2102040442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566624.

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

The square root of 2102040442 is about 45848.0145916920. The cubic root of 2102040442 is about 1280.9937843031.

Adding to 2102040442 its reverse (2440402012), we get a palindrome (4542442454).

The spelling of 2102040442 in words is "two billion, one hundred two million, forty thousand, four hundred forty-two".