421280001 has 32 divisors (see below), whose sum is σ = 637296000. Its totient is φ = 274964544.

The previous prime is 421279979. The next prime is 421280017. The reversal of 421280001 is 100082124.

It is not a de Polignac number, because 421280001 - 2⁹ = 421279489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421280051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 593835 + ... + 594543.

It is an arithmetic number, because the mean of its divisors is an integer number (19915500).

Almost surely, 2^421280001 is an apocalyptic number.

It is an amenable number.

421280001 is a deficient number, since it is larger than the sum of its proper divisors (216015999).

421280001 is a wasteful number, since it uses less digits than its factorization.

421280001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150 (or 1144 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 421280001 is about 20525.1066014284. The cubic root of 421280001 is about 749.6472421085.

The spelling of 421280001 in words is "four hundred twenty-one million, two hundred eighty thousand, one".