421085601 has 16 divisors (see below), whose sum is σ = 625632000. Its totient is φ = 279913104.

The previous prime is 421085569. The next prime is 421085669. The reversal of 421085601 is 106580124.

421085601 is a `hidden beast` number, since 42 + 10 + 8 + 5 + 601 = 666.

It is not a de Polignac number, because 421085601 - 2⁵ = 421085569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (421045601) 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 15 ways as a sum of consecutive naturals, for example, 12921 + ... + 31766.

It is an arithmetic number, because the mean of its divisors is an integer number (39102000).

Almost surely, 2^421085601 is an apocalyptic number.

It is an amenable number.

421085601 is a deficient number, since it is larger than the sum of its proper divisors (204546399).

421085601 is a wasteful number, since it uses less digits than its factorization.

421085601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45045 (or 45039 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 421085601 is about 20520.3703913940. The cubic root of 421085601 is about 749.5319159238.

The spelling of 421085601 in words is "four hundred twenty-one million, eighty-five thousand, six hundred one".