42942973 has 4 divisors (see below), whose sum is σ = 43670880. Its totient is φ = 42215068.

The previous prime is 42942961. The next prime is 42942989. The reversal of 42942973 is 37924924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42942973 - 2⁵ = 42942941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42942923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 363865 + ... + 363982.

It is an arithmetic number, because the mean of its divisors is an integer number (10917720).

Almost surely, 2^42942973 is an apocalyptic number.

It is an amenable number.

42942973 is a deficient number, since it is larger than the sum of its proper divisors (727907).

42942973 is an equidigital number, since it uses as much as digits as its factorization.

42942973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727906.

The product of its digits is 108864, while the sum is 40.

The square root of 42942973 is about 6553.0888136817. The cubic root of 42942973 is about 350.1848628862.

The spelling of 42942973 in words is "forty-two million, nine hundred forty-two thousand, nine hundred seventy-three".