42252145 has 16 divisors (see below), whose sum is σ = 55141632. Its totient is φ = 30893760.

The previous prime is 42252137. The next prime is 42252151. The reversal of 42252145 is 54125224.

42252145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42252145 - 2³ = 42252137 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3540 + ... + 9850.

It is an arithmetic number, because the mean of its divisors is an integer number (3446352).

Almost surely, 2^42252145 is an apocalyptic number.

It is an amenable number.

42252145 is a deficient number, since it is larger than the sum of its proper divisors (12889487).

42252145 is a wasteful number, since it uses less digits than its factorization.

42252145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6432.

The product of its digits is 3200, while the sum is 25.

The square root of 42252145 is about 6500.1649979058. The cubic root of 42252145 is about 348.2968824496.

Adding to 42252145 its reverse (54125224), we get a palindrome (96377369).

The spelling of 42252145 in words is "forty-two million, two hundred fifty-two thousand, one hundred forty-five".