42973 has 6 divisors (see below), whose sum is σ = 50046. Its totient is φ = 36792.

The previous prime is 42967. The next prime is 42979. The reversal of 42973 is 37924.

It is an interprime number because it is at equal distance from previous prime (42967) and next prime (42979).

It can be written as a sum of positive squares in only one way, i.e., 41209 + 1764 = 203^2 + 42^2 .

It is not a de Polignac number, because 42973 - 2^{9} = 42461 is a prime.

It is a d-powerful number, because it can be written as **4**^{7} + **2** + **9**^{4} + **7**^{3} + **3**^{9} .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42979) 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 5 ways as a sum of consecutive naturals, for example, 390 + ... + 487.

It is an arithmetic number, because the mean of its divisors is an integer number (8341).

2^{42973} is an apocalyptic number.

It is an amenable number.

42973 is a deficient number, since it is larger than the sum of its proper divisors (7073).

42973 is an equidigital number, since it uses as much as digits as its factorization.

42973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891 (or 884 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 42973 is about 207.2993005295. The cubic root of 42973 is about 35.0266463750.

The spelling of 42973 in words is "forty-two thousand, nine hundred seventy-three".

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