42172358 has 4 divisors (see below), whose sum is σ = 63258540. Its totient is φ = 21086178.

The previous prime is 42172331. The next prime is 42172373. The reversal of 42172358 is 85327124.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10543088 + ... + 10543091.

It is an arithmetic number, because the mean of its divisors is an integer number (15814635).

Almost surely, 2^42172358 is an apocalyptic number.

42172358 is a deficient number, since it is larger than the sum of its proper divisors (21086182).

42172358 is a wasteful number, since it uses less digits than its factorization.

42172358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21086181.

The product of its digits is 13440, while the sum is 32.

The square root of 42172358 is about 6494.0247920685. The cubic root of 42172358 is about 348.0775083885.

The spelling of 42172358 in words is "forty-two million, one hundred seventy-two thousand, three hundred fifty-eight".