42130445 has 24 divisors (see below), whose sum is σ = 59097600. Its totient is φ = 28748832.

The previous prime is 42130441. The next prime is 42130453. The reversal of 42130445 is 54403124.

It is not a de Polignac number, because 42130445 - 2² = 42130441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42130445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42130441) 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 23 ways as a sum of consecutive naturals, for example, 87716 + ... + 88194.

It is an arithmetic number, because the mean of its divisors is an integer number (2462400).

Almost surely, 2^42130445 is an apocalyptic number.

It is an amenable number.

42130445 is a deficient number, since it is larger than the sum of its proper divisors (16967155).

42130445 is a wasteful number, since it uses less digits than its factorization.

42130445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42130445 is about 6490.7969464466. The cubic root of 42130445 is about 347.9621578836.

Adding to 42130445 its reverse (54403124), we get a palindrome (96533569).

The spelling of 42130445 in words is "forty-two million, one hundred thirty thousand, four hundred forty-five".