2445244442 has 4 divisors (see below), whose sum is σ = 3667866666. Its totient is φ = 1222622220.

The previous prime is 2445244433. The next prime is 2445244447. The reversal of 2445244442 is 2444425442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2444425442 = 2 ⋅1222212721.

It can be written as a sum of positive squares in only one way, i.e., 1566655561 + 878588881 = 39581^2 + 29641^2 .

It is a super-2 number, since 2×2445244442² = 11958440762263782728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2445244447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611311109 + ... + 611311112.

Almost surely, 2^2445244442 is an apocalyptic number.

2445244442 is a deficient number, since it is larger than the sum of its proper divisors (1222622224).

2445244442 is a wasteful number, since it uses less digits than its factorization.

2445244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222622223.

The product of its digits is 163840, while the sum is 35.

The square root of 2445244442 is about 49449.4129591040. The cubic root of 2445244442 is about 1347.2269445793.

Adding to 2445244442 its reverse (2444425442), we get a palindrome (4889669884).

The spelling of 2445244442 in words is "two billion, four hundred forty-five million, two hundred forty-four thousand, four hundred forty-two".