10243020442 has 4 divisors (see below), whose sum is σ = 15364530666. Its totient is φ = 5121510220.

The previous prime is 10243020439. The next prime is 10243020443. The reversal of 10243020442 is 24402034201.

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., 9449978521 + 793041921 = 97211^2 + 28161^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (10243020443) by changing a digit.

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, 2560755109 + ... + 2560755112.

Almost surely, 2^10243020442 is an apocalyptic number.

10243020442 is a deficient number, since it is larger than the sum of its proper divisors (5121510224).

10243020442 is an equidigital number, since it uses as much as digits as its factorization.

10243020442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5121510223.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 10243020442 its reverse (24402034201), we get a palindrome (34645054643).

The spelling of 10243020442 in words is "ten billion, two hundred forty-three million, twenty thousand, four hundred forty-two".