721424424127 has 96 divisors (see below), whose sum is σ = 929067853824. Its totient is φ = 552680755200.

The previous prime is 721424424103. The next prime is 721424424131.

721424424127 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-721424424127 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 721424424127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721424424157) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 89982823 + ... + 89990839.

It is an arithmetic number, because the mean of its divisors is an integer number (9677790144).

Almost surely, 2^721424424127 is an apocalyptic number.

721424424127 is a deficient number, since it is larger than the sum of its proper divisors (207643429697).

721424424127 is a wasteful number, since it uses less digits than its factorization.

721424424127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8157 (or 8138 counting only the distinct ones).

The product of its digits is 200704, while the sum is 40.

The spelling of 721424424127 in words is "seven hundred twenty-one billion, four hundred twenty-four million, four hundred twenty-four thousand, one hundred twenty-seven".