42534323257 has 4 divisors (see below), whose sum is σ = 42536696356. Its totient is φ = 42531950160.

The previous prime is 42534323243. The next prime is 42534323263. The reversal of 42534323257 is 75232343524.

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 16774394256 + 25759929001 = 129516^2 + 160499^2 .

It is a cyclic number.

It is not a de Polignac number, because 42534323257 - 2¹¹ = 42534321209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42534323297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1159458 + ... + 1195579.

It is an arithmetic number, because the mean of its divisors is an integer number (10634174089).

Almost surely, 2^42534323257 is an apocalyptic number.

It is an amenable number.

42534323257 is a deficient number, since it is larger than the sum of its proper divisors (2373099).

42534323257 is a wasteful number, since it uses less digits than its factorization.

42534323257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2373098.

The product of its digits is 604800, while the sum is 40.

The spelling of 42534323257 in words is "forty-two billion, five hundred thirty-four million, three hundred twenty-three thousand, two hundred fifty-seven".