42547241 has 4 divisors (see below), whose sum is σ = 46415184. Its totient is φ = 38679300.

The previous prime is 42547237. The next prime is 42547249. The reversal of 42547241 is 14274524.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42547241 - 2² = 42547237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42547249) 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, 1933955 + ... + 1933976.

It is an arithmetic number, because the mean of its divisors is an integer number (11603796).

Almost surely, 2^42547241 is an apocalyptic number.

It is an amenable number.

42547241 is a deficient number, since it is larger than the sum of its proper divisors (3867943).

42547241 is a wasteful number, since it uses less digits than its factorization.

42547241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867942.

The product of its digits is 8960, while the sum is 29.

The square root of 42547241 is about 6522.8246182156. The cubic root of 42547241 is about 349.1058564559.

The spelling of 42547241 in words is "forty-two million, five hundred forty-seven thousand, two hundred forty-one".