42173237 has 8 divisors (see below), whose sum is σ = 45427200. Its totient is φ = 39037680.

The previous prime is 42173231. The next prime is 42173249. The reversal of 42173237 is 73237124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42173237 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 (42173231) 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 7 ways as a sum of consecutive naturals, for example, 28862 + ... + 30287.

It is an arithmetic number, because the mean of its divisors is an integer number (5678400).

Almost surely, 2^42173237 is an apocalyptic number.

It is an amenable number.

42173237 is a deficient number, since it is larger than the sum of its proper divisors (3253963).

42173237 is a wasteful number, since it uses less digits than its factorization.

42173237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59203.

The product of its digits is 7056, while the sum is 29.

The square root of 42173237 is about 6494.0924693139. The cubic root of 42173237 is about 348.0799267025.

The spelling of 42173237 in words is "forty-two million, one hundred seventy-three thousand, two hundred thirty-seven".