42044247 has 48 divisors (see below), whose sum is σ = 75546432. Its totient is φ = 21980160.

The previous prime is 42044237. The next prime is 42044251. The reversal of 42044247 is 74244024.

It is not a de Polignac number, because 42044247 - 2⁶ = 42044183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42044247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42044237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39097 + ... + 40157.

It is an arithmetic number, because the mean of its divisors is an integer number (1573884).

Almost surely, 2^42044247 is an apocalyptic number.

42044247 is a deficient number, since it is larger than the sum of its proper divisors (33502185).

42044247 is a wasteful number, since it uses less digits than its factorization.

42044247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 42044247 is about 6484.1535299528. The cubic root of 42044247 is about 347.7246881171.

The spelling of 42044247 in words is "forty-two million, forty-four thousand, two hundred forty-seven".