42269511161 has 4 divisors (see below), whose sum is σ = 44755953012. Its totient is φ = 39783069312.

The previous prime is 42269511139. The next prime is 42269511169. The reversal of 42269511161 is 16111596224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26068039936 + 16201471225 = 161456^2 + 127285^2 .

It is a cyclic number.

It is not a de Polignac number, because 42269511161 - 2¹⁸ = 42269249017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42269511169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243220900 + ... + 1243220933.

It is an arithmetic number, because the mean of its divisors is an integer number (11188988253).

Almost surely, 2^42269511161 is an apocalyptic number.

It is an amenable number.

42269511161 is a deficient number, since it is larger than the sum of its proper divisors (2486441851).

42269511161 is a wasteful number, since it uses less digits than its factorization.

42269511161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486441850.

The product of its digits is 25920, while the sum is 38.

The spelling of 42269511161 in words is "forty-two billion, two hundred sixty-nine million, five hundred eleven thousand, one hundred sixty-one".