42248145 has 32 divisors (see below), whose sum is σ = 73256832. Its totient is φ = 20708352.

The previous prime is 42248119. The next prime is 42248147. The reversal of 42248145 is 54184224.

It is not a de Polignac number, because 42248145 - 2⁵ = 42248113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42248147) 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, 9039 + ... + 12891.

It is an arithmetic number, because the mean of its divisors is an integer number (2289276).

Almost surely, 2^42248145 is an apocalyptic number.

It is an amenable number.

42248145 is a deficient number, since it is larger than the sum of its proper divisors (31008687).

42248145 is a wasteful number, since it uses less digits than its factorization.

42248145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921.

The product of its digits is 10240, while the sum is 30.

The square root of 42248145 is about 6499.8573061260. The cubic root of 42248145 is about 348.2858910431.

The spelling of 42248145 in words is "forty-two million, two hundred forty-eight thousand, one hundred forty-five".