4089554243242 has 12 divisors (see below), whose sum is σ = 6642500827590. Its totient is φ = 1887486573648.

The previous prime is 4089554243227. The next prime is 4089554243309. The reversal of 4089554243242 is 2423424559804.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1435297445521 + 2654256797721 = 1198039^2 + 1629189^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4089554243242.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6049636117 + ... + 6049636792.

Almost surely, 2^{4089554243242} is an apocalyptic number.

4089554243242 is a deficient number, since it is larger than the sum of its proper divisors (2552946584348).

4089554243242 is a wasteful number, since it uses less digits than its factorization.

4089554243242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12099272937 (or 12099272924 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 52.

The spelling of 4089554243242 in words is "four trillion, eighty-nine billion, five hundred fifty-four million, two hundred forty-three thousand, two hundred forty-two".