42973145 has 8 divisors (see below), whose sum is σ = 52069056. Its totient is φ = 34044336.

The previous prime is 42973057. The next prime is 42973153. The reversal of 42973145 is 54137924.

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

It is a cyclic number.

It is not a de Polignac number, because 42973145 - 2¹⁸ = 42711001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41207 + ... + 42236.

It is an arithmetic number, because the mean of its divisors is an integer number (6508632).

Almost surely, 2^42973145 is an apocalyptic number.

It is an amenable number.

42973145 is a deficient number, since it is larger than the sum of its proper divisors (9095911).

42973145 is a wasteful number, since it uses less digits than its factorization.

42973145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83551.

The product of its digits is 30240, while the sum is 35.

The square root of 42973145 is about 6555.3905299379. The cubic root of 42973145 is about 350.2668577070.

The spelling of 42973145 in words is "forty-two million, nine hundred seventy-three thousand, one hundred forty-five".