42380845 has 16 divisors (see below), whose sum is σ = 54956160. Its totient is φ = 31189824.

The previous prime is 42380837. The next prime is 42380957. The reversal of 42380845 is 54808324.

42380845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42380845 - 2³ = 42380837 is a prime.

It is a super-2 number, since 2×42380845² = 3592272045828050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42380845.

It is a congruent number.

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, 21616 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (3434760).

Almost surely, 2^42380845 is an apocalyptic number.

It is an amenable number.

42380845 is a deficient number, since it is larger than the sum of its proper divisors (12575315).

42380845 is a wasteful number, since it uses less digits than its factorization.

42380845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 42380845 is about 6510.0572194106. The cubic root of 42380845 is about 348.6501613384.

It can be divided in two parts, 4 and 2380845, that added together give a square (2380849 = 1543²).

The spelling of 42380845 in words is "forty-two million, three hundred eighty thousand, eight hundred forty-five".