42535123541 has 2 divisors, whose sum is σ = 42535123542. Its totient is φ = 42535123540.

The previous prime is 42535123511. The next prime is 42535123567. The reversal of 42535123541 is 14532153524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40775321041 + 1759802500 = 201929^2 + 41950^2 .

It is a cyclic number.

It is not a de Polignac number, because 42535123541 - 2¹⁰ = 42535122517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42535123511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21267561770 + 21267561771.

It is an arithmetic number, because the mean of its divisors is an integer number (21267561771).

Almost surely, 2^42535123541 is an apocalyptic number.

It is an amenable number.

42535123541 is a deficient number, since it is larger than the sum of its proper divisors (1).

42535123541 is an equidigital number, since it uses as much as digits as its factorization.

42535123541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 35.

The spelling of 42535123541 in words is "forty-two billion, five hundred thirty-five million, one hundred twenty-three thousand, five hundred forty-one".