42172935 has 32 divisors (see below), whose sum is σ = 78216192. Its totient is φ = 19004160.

The previous prime is 42172909. The next prime is 42172939. The reversal of 42172935 is 53927124.

It is not a de Polignac number, because 42172935 - 2¹⁵ = 42140167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42172896 and 42172905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42172939) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4627 + ... + 10283.

It is an arithmetic number, because the mean of its divisors is an integer number (2444256).

Almost surely, 2^42172935 is an apocalyptic number.

42172935 is a deficient number, since it is larger than the sum of its proper divisors (36043257).

42172935 is a wasteful number, since it uses less digits than its factorization.

42172935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743.

The product of its digits is 15120, while the sum is 33.

The square root of 42172935 is about 6494.0692173706. The cubic root of 42172935 is about 348.0790958407.

The spelling of 42172935 in words is "forty-two million, one hundred seventy-two thousand, nine hundred thirty-five".