42080126545 has 4 divisors (see below), whose sum is σ = 50496151860. Its totient is φ = 33664101232.

The previous prime is 42080126531. The next prime is 42080126551. The reversal of 42080126545 is 54562108024.

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 12810391489 + 29269735056 = 113183^2 + 171084^2 .

It is a cyclic number.

It is not a de Polignac number, because 42080126545 - 2²³ = 42071737937 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4208012650 + ... + 4208012659.

It is an arithmetic number, because the mean of its divisors is an integer number (12624037965).

Almost surely, 2^42080126545 is an apocalyptic number.

It is an amenable number.

42080126545 is a deficient number, since it is larger than the sum of its proper divisors (8416025315).

42080126545 is an equidigital number, since it uses as much as digits as its factorization.

42080126545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8416025314.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 42080126545 in words is "forty-two billion, eighty million, one hundred twenty-six thousand, five hundred forty-five".