42728433111 has 36 divisors (see below), whose sum is σ = 77318127432. Its totient is φ = 22538071584.

The previous prime is 42728433001. The next prime is 42728433173. The reversal of 42728433111 is 11133482724.

42728433111 is a `hidden beast` number, since 42 + 7 + 284 + 331 + 1 + 1 = 666.

It is not a de Polignac number, because 42728433111 - 2⁷ = 42728432983 is a prime.

It is a super-2 number, since 2×42728433111² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42728433191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3720801 + ... + 3732266.

It is an arithmetic number, because the mean of its divisors is an integer number (2147725762).

Almost surely, 2^42728433111 is an apocalyptic number.

42728433111 is a deficient number, since it is larger than the sum of its proper divisors (34589694321).

42728433111 is a wasteful number, since it uses less digits than its factorization.

42728433111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7453100 (or 7453090 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The spelling of 42728433111 in words is "forty-two billion, seven hundred twenty-eight million, four hundred thirty-three thousand, one hundred eleven".