42129185 has 8 divisors (see below), whose sum is σ = 57777216. Its totient is φ = 28888560.

The previous prime is 42129173. The next prime is 42129209. The reversal of 42129185 is 58192124.

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

It is not a de Polignac number, because 42129185 - 2⁸ = 42128929 is a prime.

It is an unprimeable number.

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, 601811 + ... + 601880.

It is an arithmetic number, because the mean of its divisors is an integer number (7222152).

Almost surely, 2^42129185 is an apocalyptic number.

It is an amenable number.

42129185 is a deficient number, since it is larger than the sum of its proper divisors (15648031).

42129185 is a wasteful number, since it uses less digits than its factorization.

42129185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203703.

The product of its digits is 5760, while the sum is 32.

The square root of 42129185 is about 6490.6998852204. The cubic root of 42129185 is about 347.9586890011.

The spelling of 42129185 in words is "forty-two million, one hundred twenty-nine thousand, one hundred eighty-five".