42532447 has 4 divisors (see below), whose sum is σ = 43335000. Its totient is φ = 41729896.

The previous prime is 42532439. The next prime is 42532493. The reversal of 42532447 is 74423524.

It is a happy number.

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 42532447 - 2³ = 42532439 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 (42532417) 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, 401197 + ... + 401302.

It is an arithmetic number, because the mean of its divisors is an integer number (10833750).

Almost surely, 2^42532447 is an apocalyptic number.

42532447 is a deficient number, since it is larger than the sum of its proper divisors (802553).

42532447 is an equidigital number, since it uses as much as digits as its factorization.

42532447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802552.

The product of its digits is 26880, while the sum is 31.

The square root of 42532447 is about 6521.6905017028. The cubic root of 42532447 is about 349.0653895096.

The spelling of 42532447 in words is "forty-two million, five hundred thirty-two thousand, four hundred forty-seven".