42494923 has 4 divisors (see below), whose sum is σ = 43296768. Its totient is φ = 41693080.

The previous prime is 42494911. The next prime is 42494929. The reversal of 42494923 is 32949424.

42494923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42494923 - 2⁵ = 42494891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42494929) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 400843 + ... + 400948.

It is an arithmetic number, because the mean of its divisors is an integer number (10824192).

Almost surely, 2^42494923 is an apocalyptic number.

42494923 is a deficient number, since it is larger than the sum of its proper divisors (801845).

42494923 is an equidigital number, since it uses as much as digits as its factorization.

42494923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801844.

The product of its digits is 62208, while the sum is 37.

The square root of 42494923 is about 6518.8130054482. The cubic root of 42494923 is about 348.9627056806.

The spelling of 42494923 in words is "forty-two million, four hundred ninety-four thousand, nine hundred twenty-three".