421001617127 has 16 divisors (see below), whose sum is σ = 518177587200. Its totient is φ = 333086198112.

The previous prime is 421001617117. The next prime is 421001617133. The reversal of 421001617127 is 721716100124.

It is a cyclic number.

It is not a de Polignac number, because 421001617127 - 2²⁰ = 421000568551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421001617093 and 421001617102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421001617117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2446874 + ... + 2613272.

It is an arithmetic number, because the mean of its divisors is an integer number (32386099200).

Almost surely, 2^421001617127 is an apocalyptic number.

421001617127 is a deficient number, since it is larger than the sum of its proper divisors (97175970073).

421001617127 is a wasteful number, since it uses less digits than its factorization.

421001617127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194222.

The product of its (nonzero) digits is 4704, while the sum is 32.

The spelling of 421001617127 in words is "four hundred twenty-one billion, one million, six hundred seventeen thousand, one hundred twenty-seven".