42173736 has 64 divisors (see below), whose sum is σ = 121798080. Its totient is φ = 12026880.

The previous prime is 42173723. The next prime is 42173741. The reversal of 42173736 is 63737124.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 42173697 and 42173706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (1903095).

Almost surely, 2^42173736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42173736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60899040).

42173736 is an abundant number, since it is smaller than the sum of its proper divisors (79624344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42173736 is a wasteful number, since it uses less digits than its factorization.

42173736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9434 (or 9430 counting only the distinct ones).

The product of its digits is 21168, while the sum is 33.

The square root of 42173736 is about 6494.1308887333. The cubic root of 42173736 is about 348.0812995415.

The spelling of 42173736 in words is "forty-two million, one hundred seventy-three thousand, seven hundred thirty-six".