42448247 has 4 divisors (see below), whose sum is σ = 42718776. Its totient is φ = 42177720.

The previous prime is 42448187. The next prime is 42448279. The reversal of 42448247 is 74284424.

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 42448247 - 2¹² = 42444151 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 (42448447) 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, 135029 + ... + 135342.

It is an arithmetic number, because the mean of its divisors is an integer number (10679694).

Almost surely, 2^42448247 is an apocalyptic number.

42448247 is a deficient number, since it is larger than the sum of its proper divisors (270529).

42448247 is a wasteful number, since it uses less digits than its factorization.

42448247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270528.

The product of its digits is 57344, while the sum is 35.

The square root of 42448247 is about 6515.2319221959. The cubic root of 42448247 is about 348.8348931536.

The spelling of 42448247 in words is "forty-two million, four hundred forty-eight thousand, two hundred forty-seven".