42305445 has 48 divisors (see below), whose sum is σ = 90260352. Its totient is φ = 17850240.

The previous prime is 42305443. The next prime is 42305447. The reversal of 42305445 is 54450324.

It is an interprime number because it is at equal distance from previous prime (42305443) and next prime (42305447).

It is not a de Polignac number, because 42305445 - 2¹ = 42305443 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42305443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1071 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (1880424).

Almost surely, 2^42305445 is an apocalyptic number.

42305445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42305445 is an abundant number, since it is smaller than the sum of its proper divisors (47954907).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42305445 is a wasteful number, since it uses less digits than its factorization.

42305445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10362 (or 10359 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 42305445 is about 6504.2636016693. The cubic root of 42305445 is about 348.4432767782.

Adding to 42305445 its reverse (54450324), we get a palindrome (96755769).

The spelling of 42305445 in words is "forty-two million, three hundred five thousand, four hundred forty-five".