42530447 has 4 divisors (see below), whose sum is σ = 45032256. Its totient is φ = 40028640.

The previous prime is 42530437. The next prime is 42530459. The reversal of 42530447 is 74403524.

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 42530447 - 2⁴ = 42530431 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 (42530437) 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, 1250879 + ... + 1250912.

It is an arithmetic number, because the mean of its divisors is an integer number (11258064).

Almost surely, 2^42530447 is an apocalyptic number.

42530447 is a deficient number, since it is larger than the sum of its proper divisors (2501809).

42530447 is a wasteful number, since it uses less digits than its factorization.

42530447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501808.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 42530447 is about 6521.5371654235. The cubic root of 42530447 is about 349.0599180655.

The spelling of 42530447 in words is "forty-two million, five hundred thirty thousand, four hundred forty-seven".