42180445 has 8 divisors (see below), whose sum is σ = 50652000. Its totient is φ = 33720720.

The previous prime is 42180443. The next prime is 42180469. The reversal of 42180445 is 54408124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42180445 - 2¹ = 42180443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42180443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10306 + ... + 13804.

It is an arithmetic number, because the mean of its divisors is an integer number (6331500).

Almost surely, 2^42180445 is an apocalyptic number.

It is an amenable number.

42180445 is a deficient number, since it is larger than the sum of its proper divisors (8471555).

42180445 is a wasteful number, since it uses less digits than its factorization.

42180445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 42180445 is about 6494.6474115228. The cubic root of 42180445 is about 348.0997561596.

Adding to 42180445 its reverse (54408124), we get a palindrome (96588569).

The spelling of 42180445 in words is "forty-two million, one hundred eighty thousand, four hundred forty-five".