42144432353 has 4 divisors (see below), whose sum is σ = 42154299588. Its totient is φ = 42134565120.

The previous prime is 42144432349. The next prime is 42144432371. The reversal of 42144432353 is 35323444124.

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 21146103889 + 20998328464 = 145417^2 + 144908^2 .

It is a cyclic number.

It is not a de Polignac number, because 42144432353 - 2² = 42144432349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42144431353) 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, 4927208 + ... + 4935753.

It is an arithmetic number, because the mean of its divisors is an integer number (10538574897).

Almost surely, 2^42144432353 is an apocalyptic number.

It is an amenable number.

42144432353 is a deficient number, since it is larger than the sum of its proper divisors (9867235).

42144432353 is an equidigital number, since it uses as much as digits as its factorization.

42144432353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867234.

The product of its digits is 138240, while the sum is 35.

Adding to 42144432353 its reverse (35323444124), we get a palindrome (77467876477).

The spelling of 42144432353 in words is "forty-two billion, one hundred forty-four million, four hundred thirty-two thousand, three hundred fifty-three".