42472777881 has 8 divisors (see below), whose sum is σ = 56631323200. Its totient is φ = 28314708912.

The previous prime is 42472777861. The next prime is 42472777927. The reversal of 42472777881 is 18877727424.

It is a happy number.

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

It is not a de Polignac number, because 42472777881 - 2³⁰ = 41399036057 is a prime.

It is a super-2 number, since 2×42472777881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42472777861) 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 7 ways as a sum of consecutive naturals, for example, 280611 + ... + 404583.

It is an arithmetic number, because the mean of its divisors is an integer number (7078915400).

Almost surely, 2^42472777881 is an apocalyptic number.

It is an amenable number.

42472777881 is a deficient number, since it is larger than the sum of its proper divisors (14158545319).

42472777881 is a wasteful number, since it uses less digits than its factorization.

42472777881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238175.

The product of its digits is 9834496, while the sum is 57.

The spelling of 42472777881 in words is "forty-two billion, four hundred seventy-two million, seven hundred seventy-seven thousand, eight hundred eighty-one".