42728544231 has 16 divisors (see below), whose sum is σ = 60064976640. Its totient is φ = 26943658560.

The previous prime is 42728544227. The next prime is 42728544241. The reversal of 42728544231 is 13244582724.

It is a happy number.

It is not a de Polignac number, because 42728544231 - 2² = 42728544227 is a prime.

It is a super-2 number, since 2×42728544231² (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 (42728544241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558030 + ... + 629963.

It is an arithmetic number, because the mean of its divisors is an integer number (3754061040).

Almost surely, 2^42728544231 is an apocalyptic number.

42728544231 is a deficient number, since it is larger than the sum of its proper divisors (17336432409).

42728544231 is a wasteful number, since it uses less digits than its factorization.

42728544231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188646.

The product of its digits is 430080, while the sum is 42.

The spelling of 42728544231 in words is "forty-two billion, seven hundred twenty-eight million, five hundred forty-four thousand, two hundred thirty-one".