2445555442 has 64 divisors (see below), whose sum is σ = 4237401600. Its totient is φ = 1057056000.

The previous prime is 2445555433. The next prime is 2445555449.

2445555442 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2445555395 and 2445555404.

It is not an unprimeable number, because it can be changed into a prime (2445555449) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6098442 + ... + 6098842.

It is an arithmetic number, because the mean of its divisors is an integer number (66209400).

Almost surely, 2^2445555442 is an apocalyptic number.

2445555442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2445555442 is a deficient number, since it is larger than the sum of its proper divisors (1791846158).

2445555442 is a wasteful number, since it uses less digits than its factorization.

2445555442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 522 counting only the distinct ones).

The product of its digits is 640000, while the sum is 40.

The square root of 2445555442 is about 49452.5574869490. The cubic root of 2445555442 is about 1347.2840581355.

It can be divided in two parts, 24455 and 55442, that added together give a palindrome (79897).

The spelling of 2445555442 in words is "two billion, four hundred forty-five million, five hundred fifty-five thousand, four hundred forty-two".