42135505 has 8 divisors (see below), whose sum is σ = 50629824. Its totient is φ = 33663600.

The previous prime is 42135497. The next prime is 42135523. The reversal of 42135505 is 50553124.

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

It is not a de Polignac number, because 42135505 - 2³ = 42135497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42135505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (6328728).

Almost surely, 2^42135505 is an apocalyptic number.

It is an amenable number.

42135505 is a deficient number, since it is larger than the sum of its proper divisors (8494319).

42135505 is a wasteful number, since it uses less digits than its factorization.

42135505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11207.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 42135505 is about 6491.1867173884. The cubic root of 42135505 is about 347.9760877787.

Adding to 42135505 its reverse (50553124), we get a palindrome (92688629).

The spelling of 42135505 in words is "forty-two million, one hundred thirty-five thousand, five hundred five".