42312112133 has 6 divisors (see below), whose sum is σ = 43721049222. Its totient is φ = 40947204360.

The previous prime is 42312112109. The next prime is 42312112181. The reversal of 42312112133 is 33121121324.

It can be written as a sum of positive squares in only one way, i.e., 37984840609 + 4327271524 = 194897^2 + 65782^2 .

It is not a de Polignac number, because 42312112133 - 2¹² = 42312108037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42312112099 and 42312112108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312112033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22013666 + ... + 22015587.

It is an arithmetic number, because the mean of its divisors is an integer number (7286841537).

Almost surely, 2^42312112133 is an apocalyptic number.

It is an amenable number.

42312112133 is a deficient number, since it is larger than the sum of its proper divisors (1408937089).

42312112133 is an equidigital number, since it uses as much as digits as its factorization.

42312112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44029315 (or 44029284 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 42312112133 its reverse (33121121324), we get a palindrome (75433233457).

The spelling of 42312112133 in words is "forty-two billion, three hundred twelve million, one hundred twelve thousand, one hundred thirty-three".