42393547 has 4 divisors (see below), whose sum is σ = 48449776. Its totient is φ = 36337320.

The previous prime is 42393539. The next prime is 42393557. The reversal of 42393547 is 74539324.

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 42393547 - 2³ = 42393539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42393517) 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, 3028104 + ... + 3028117.

It is an arithmetic number, because the mean of its divisors is an integer number (12112444).

Almost surely, 2^42393547 is an apocalyptic number.

42393547 is a deficient number, since it is larger than the sum of its proper divisors (6056229).

42393547 is an equidigital number, since it uses as much as digits as its factorization.

42393547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6056228.

The product of its digits is 90720, while the sum is 37.

The square root of 42393547 is about 6511.0327137867. The cubic root of 42393547 is about 348.6849892738.

The spelling of 42393547 in words is "forty-two million, three hundred ninety-three thousand, five hundred forty-seven".