545120442 has 48 divisors (see below), whose sum is σ = 1243193952. Its totient is φ = 178984080.

The previous prime is 545120437. The next prime is 545120467. The reversal of 545120442 is 244021545.

545120442 is a `hidden beast` number, since 5 + 451 + 204 + 4 + 2 = 666.

545120442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24192 + ... + 40932.

It is an arithmetic number, because the mean of its divisors is an integer number (25899874).

Almost surely, 2^545120442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545120442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621596976).

545120442 is an abundant number, since it is smaller than the sum of its proper divisors (698073510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545120442 is a wasteful number, since it uses less digits than its factorization.

545120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16825 (or 16813 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 545120442 is about 23347.8145015759. The cubic root of 545120442 is about 816.8910843105.

Adding to 545120442 its reverse (244021545), we get a palindrome (789141987).

The spelling of 545120442 in words is "five hundred forty-five million, one hundred twenty thousand, four hundred forty-two".