42136161 has 16 divisors (see below), whose sum is σ = 60518400. Its totient is φ = 26001360.

The previous prime is 42136141. The next prime is 42136163. The reversal of 42136161 is 16163124.

It is not a de Polignac number, because 42136161 - 2¹⁵ = 42103393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42136163) 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 15 ways as a sum of consecutive naturals, for example, 7711 + ... + 11988.

It is an arithmetic number, because the mean of its divisors is an integer number (3782400).

Almost surely, 2^42136161 is an apocalyptic number.

It is an amenable number.

42136161 is a deficient number, since it is larger than the sum of its proper divisors (18382239).

42136161 is a wasteful number, since it uses less digits than its factorization.

42136161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19756.

The product of its digits is 864, while the sum is 24.

The square root of 42136161 is about 6491.2372472434. The cubic root of 42136161 is about 347.9778936281.

Adding to 42136161 its reverse (16163124), we get a palindrome (58299285).

The spelling of 42136161 in words is "forty-two million, one hundred thirty-six thousand, one hundred sixty-one".