42173604 has 72 divisors (see below), whose sum is σ = 117018720. Its totient is φ = 12700800.

The previous prime is 42173603. The next prime is 42173611. The reversal of 42173604 is 40637124.

42173604 is a `hidden beast` number, since 42 + 17 + 3 + 604 = 666.

It is a super-2 number, since 2×42173604² = 3557225748697632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42173603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111087 + ... + 111465.

It is an arithmetic number, because the mean of its divisors is an integer number (1625260).

Almost surely, 2^42173604 is an apocalyptic number.

42173604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42173604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58509360).

42173604 is an abundant number, since it is smaller than the sum of its proper divisors (74845116).

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

42173604 is a wasteful number, since it uses less digits than its factorization.

42173604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 42173604 is about 6494.1207257026. The cubic root of 42173604 is about 348.0809363867.

The spelling of 42173604 in words is "forty-two million, one hundred seventy-three thousand, six hundred four".