42135715 has 8 divisors (see below), whose sum is σ = 51131520. Its totient is φ = 33329472.

The previous prime is 42135713. The next prime is 42135719. The reversal of 42135715 is 51753124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42135715 - 2¹ = 42135713 is a prime.

It is a super-2 number, since 2×42135715² = 3550836957122450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42135713) by changing a digit.

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, 46899 + ... + 47788.

It is an arithmetic number, because the mean of its divisors is an integer number (6391440).

Almost surely, 2^42135715 is an apocalyptic number.

42135715 is a deficient number, since it is larger than the sum of its proper divisors (8995805).

42135715 is an equidigital number, since it uses as much as digits as its factorization.

42135715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94781.

The product of its digits is 4200, while the sum is 28.

The square root of 42135715 is about 6491.2028931470. The cubic root of 42135715 is about 347.9766658728.

Adding to 42135715 its reverse (51753124), we get a palindrome (93888839).

The spelling of 42135715 in words is "forty-two million, one hundred thirty-five thousand, seven hundred fifteen".