42142605 has 8 divisors (see below), whose sum is σ = 67428192. Its totient is φ = 22476048.

The previous prime is 42142577. The next prime is 42142621. The reversal of 42142605 is 50624124.

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

It is not a de Polignac number, because 42142605 - 2¹⁰ = 42141581 is a prime.

It is a congruent number.

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, 1404739 + ... + 1404768.

It is an arithmetic number, because the mean of its divisors is an integer number (8428524).

Almost surely, 2^42142605 is an apocalyptic number.

It is an amenable number.

42142605 is a deficient number, since it is larger than the sum of its proper divisors (25285587).

42142605 is a wasteful number, since it uses less digits than its factorization.

42142605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809515.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42142605 is about 6491.7335897278. The cubic root of 42142605 is about 347.9956317988.

Adding to 42142605 its reverse (50624124), we get a palindrome (92766729).

The spelling of 42142605 in words is "forty-two million, one hundred forty-two thousand, six hundred five".