42136771 has 4 divisors (see below), whose sum is σ = 42229432.
Its totient is φ = 42044112.
The previous prime is 42136763. The next prime is 42136789. The reversal of 42136771 is 17763124.
Adding to 42136771 its reverse (17763124), we get a palindrome (59899895).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 42136771 - 23 = 42136763 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (42136741) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45645 + ... + 46558.
It is an arithmetic number, because the mean of its divisors is an integer number (10557358).
Almost surely, 242136771 is an apocalyptic number.
42136771 is a deficient number, since it is larger than the sum of its proper divisors (92661).
42136771 is an equidigital number, since it uses as much as digits as its factorization.
42136771 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92660.
The product of its digits is 7056, while the sum is 31.
The square root of 42136771 is about 6491.2842334934.
The cubic root of 42136771 is about 347.9795728310.
The spelling of 42136771 in words is "forty-two million, one hundred thirty-six thousand, seven hundred seventy-one".