42135873 has 16 divisors (see below), whose sum is σ = 61358976. Its totient is φ = 25562880.

The previous prime is 42135871. The next prime is 42135881. The reversal of 42135873 is 37853124.

It is not a de Polignac number, because 42135873 - 2¹ = 42135871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42135871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4840 + ... + 10377.

It is an arithmetic number, because the mean of its divisors is an integer number (3834936).

Almost surely, 2^42135873 is an apocalyptic number.

It is an amenable number.

42135873 is a deficient number, since it is larger than the sum of its proper divisors (19223103).

42135873 is a wasteful number, since it uses less digits than its factorization.

42135873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15304.

The product of its digits is 20160, while the sum is 33.

The square root of 42135873 is about 6491.2150634531. The cubic root of 42135873 is about 347.9771008185.

Adding to 42135873 its reverse (37853124), we get a palindrome (79988997).

The spelling of 42135873 in words is "forty-two million, one hundred thirty-five thousand, eight hundred seventy-three".