42721612724 has 24 divisors (see below), whose sum is σ = 85449110208. Its totient is φ = 18308001600.

The previous prime is 42721612723. The next prime is 42721612753.

42721612724 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42721612723) 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, 443387 + ... + 531069.

It is an arithmetic number, because the mean of its divisors is an integer number (3560379592).

Almost surely, 2^42721612724 is an apocalyptic number.

It is an amenable number.

42721612724 is an abundant number, since it is smaller than the sum of its proper divisors (42727497484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42721612724 is a wasteful number, since it uses less digits than its factorization.

42721612724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105095 (or 105093 counting only the distinct ones).

The product of its digits is 75264, while the sum is 38.

The spelling of 42721612724 in words is "forty-two billion, seven hundred twenty-one million, six hundred twelve thousand, seven hundred twenty-four".