2003442145 has 32 divisors (see below), whose sum is σ = 2525700096. Its totient is φ = 1524096000.

The previous prime is 2003442101. The next prime is 2003442151. The reversal of 2003442145 is 5412443002.

It is a happy number.

It is not a de Polignac number, because 2003442145 - 2⁷ = 2003442017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1667545 + ... + 1668745.

It is an arithmetic number, because the mean of its divisors is an integer number (78928128).

Almost surely, 2^2003442145 is an apocalyptic number.

It is an amenable number.

2003442145 is a deficient number, since it is larger than the sum of its proper divisors (522257951).

2003442145 is a wasteful number, since it uses less digits than its factorization.

2003442145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2003442145 is about 44759.8273566822. The cubic root of 2003442145 is about 1260.6434407813.

Adding to 2003442145 its reverse (5412443002), we get a palindrome (7415885147).

The spelling of 2003442145 in words is "two billion, three million, four hundred forty-two thousand, one hundred forty-five".