42107247 has 24 divisors (see below), whose sum is σ = 74858784. Its totient is φ = 22209984.

The previous prime is 42107239. The next prime is 42107257. The reversal of 42107247 is 74270124.

It is a happy number.

It is not a de Polignac number, because 42107247 - 2³ = 42107239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42107247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42107257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24888 + ... + 26525.

It is an arithmetic number, because the mean of its divisors is an integer number (3119116).

Almost surely, 2^42107247 is an apocalyptic number.

42107247 is a deficient number, since it is larger than the sum of its proper divisors (32751537).

42107247 is a wasteful number, since it uses less digits than its factorization.

42107247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51439 (or 51436 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 42107247 is about 6489.0097087306. The cubic root of 42107247 is about 347.8982808137.

The spelling of 42107247 in words is "forty-two million, one hundred seven thousand, two hundred forty-seven".