42873923 has 2 divisors, whose sum is σ = 42873924. Its totient is φ = 42873922.

The previous prime is 42873913. The next prime is 42873931. The reversal of 42873923 is 32937824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42873923 - 2⁴ = 42873907 is a prime.

It is not a weakly prime, because it can be changed into another prime (42873913) 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 as a sum of consecutive naturals, namely, 21436961 + 21436962.

It is an arithmetic number, because the mean of its divisors is an integer number (21436962).

Almost surely, 2^42873923 is an apocalyptic number.

42873923 is a deficient number, since it is larger than the sum of its proper divisors (1).

42873923 is an equidigital number, since it uses as much as digits as its factorization.

42873923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The square root of 42873923 is about 6547.8181862358. The cubic root of 42873923 is about 349.9970693632.

The spelling of 42873923 in words is "forty-two million, eight hundred seventy-three thousand, nine hundred twenty-three".