42087404705 has 4 divisors (see below), whose sum is σ = 50504885652. Its totient is φ = 33669923760.

The previous prime is 42087404701. The next prime is 42087404707. The reversal of 42087404705 is 50740478024.

It is a happy number.

42087404705 is digitally balanced in base 11, because in such base it contains all the possibile digits an equal number of times.

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 22877167504 + 19210237201 = 151252^2 + 138601^2 .

It is not a de Polignac number, because 42087404705 - 2² = 42087404701 is a prime.

It is a super-2 number, since 2×42087404705² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

42087404705 is strictly pandigital in base 11.

It is not an unprimeable number, because it can be changed into a prime (42087404701) by changing a digit.

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, 4208740466 + ... + 4208740475.

It is an arithmetic number, because the mean of its divisors is an integer number (12626221413).

Almost surely, 2^42087404705 is an apocalyptic number.

It is an amenable number.

42087404705 is a deficient number, since it is larger than the sum of its proper divisors (8417480947).

42087404705 is an equidigital number, since it uses as much as digits as its factorization.

42087404705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8417480946.

The product of its (nonzero) digits is 250880, while the sum is 41.

The spelling of 42087404705 in words is "forty-two billion, eighty-seven million, four hundred four thousand, seven hundred five".