421059529881 has 27 divisors (see below), whose sum is σ = 631636052853. Its totient is φ = 280671313140.

The previous prime is 421059529879. The next prime is 421059529901. The reversal of 421059529881 is 188925950124.

The square root of 421059529881 is 648891.

It is a perfect power (a square), and thus also a powerful number.

421059529881 is a `hidden beast` number, since 4 + 2 + 105 + 9 + 529 + 8 + 8 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 421059529881 - 2¹ = 421059529879 is a prime.

It is a super-2 number, since 2×421059529881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421059539881) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 52556166 + ... + 52564176.

Almost surely, 2^421059529881 is an apocalyptic number.

421059529881 is the 648891-st square number.

421059529881 is the 324446-th centered octagonal number.

It is an amenable number.

421059529881 is a deficient number, since it is larger than the sum of its proper divisors (210576522972).

421059529881 is an frugal number, since it uses more digits than its factorization.

421059529881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16046 (or 8014 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 421059529881 in words is "four hundred twenty-one billion, fifty-nine million, five hundred twenty-nine thousand, eight hundred eighty-one".