42190745 has 8 divisors (see below), whose sum is σ = 50810760. Its totient is φ = 33631360.

The previous prime is 42190699. The next prime is 42190751. The reversal of 42190745 is 54709124.

It is a happy number.

42190745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19456921 + 22733824 = 4411^2 + 4768^2 .

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

It is not a de Polignac number, because 42190745 - 2¹² = 42186649 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 13610 + ... + 16419.

It is an arithmetic number, because the mean of its divisors is an integer number (6351345).

Almost surely, 2^42190745 is an apocalyptic number.

It is an amenable number.

42190745 is a deficient number, since it is larger than the sum of its proper divisors (8620015).

42190745 is a wasteful number, since it uses less digits than its factorization.

42190745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30315.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 42190745 is about 6495.4403237964. The cubic root of 42190745 is about 348.1280878955.

Adding to 42190745 its reverse (54709124), we get a palindrome (96899869).

The spelling of 42190745 in words is "forty-two million, one hundred ninety thousand, seven hundred forty-five".