42485109 has 4 divisors (see below), whose sum is σ = 56646816. Its totient is φ = 28323404.

The previous prime is 42485101. The next prime is 42485123. The reversal of 42485109 is 90158424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42485109 - 2³ = 42485101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42485109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42485101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7080849 + ... + 7080854.

It is an arithmetic number, because the mean of its divisors is an integer number (14161704).

Almost surely, 2^42485109 is an apocalyptic number.

It is an amenable number.

42485109 is a deficient number, since it is larger than the sum of its proper divisors (14161707).

42485109 is a wasteful number, since it uses less digits than its factorization.

42485109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14161706.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 42485109 is about 6518.0602175801. The cubic root of 42485109 is about 348.9358398543.

The spelling of 42485109 in words is "forty-two million, four hundred eighty-five thousand, one hundred nine".