10005205442 has 4 divisors (see below), whose sum is σ = 15007808166. Its totient is φ = 5002602720.

The previous prime is 10005205423. The next prime is 10005205481. The reversal of 10005205442 is 24450250001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7184427121 + 2820778321 = 84761^2 + 53111^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2501301359 + ... + 2501301362.

Almost surely, 2^10005205442 is an apocalyptic number.

10005205442 is a deficient number, since it is larger than the sum of its proper divisors (5002602724).

10005205442 is an equidigital number, since it uses as much as digits as its factorization.

10005205442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5002602723.

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 10005205442 its reverse (24450250001), we get a palindrome (34455455443).

The spelling of 10005205442 in words is "ten billion, five million, two hundred five thousand, four hundred forty-two".