42127090809 has 8 divisors (see below), whose sum is σ = 56725588032. Its totient is φ = 27806660400.

The previous prime is 42127090801. The next prime is 42127090891. The reversal of 42127090809 is 90809072124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42127090809 - 2³ = 42127090801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42127090801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69516349 + ... + 69516954.

It is an arithmetic number, because the mean of its divisors is an integer number (7090698504).

Almost surely, 2^42127090809 is an apocalyptic number.

It is an amenable number.

42127090809 is a deficient number, since it is larger than the sum of its proper divisors (14598497223).

42127090809 is a wasteful number, since it uses less digits than its factorization.

42127090809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139033407.

The product of its (nonzero) digits is 72576, while the sum is 42.

The spelling of 42127090809 in words is "forty-two billion, one hundred twenty-seven million, ninety thousand, eight hundred nine".