420955641 has 12 divisors (see below), whose sum is σ = 620984832. Its totient is φ = 274665816.

The previous prime is 420955607. The next prime is 420955643. The reversal of 420955641 is 146559024.

420955641 is a `hidden beast` number, since 4 + 2 + 0 + 9 + 5 + 5 + 641 = 666.

It is not a de Polignac number, because 420955641 - 2¹⁰ = 420954617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420955596 and 420955605.

It is not an unprimeable number, because it can be changed into a prime (420955643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497161 + ... + 498006.

It is an arithmetic number, because the mean of its divisors is an integer number (51748736).

Almost surely, 2^420955641 is an apocalyptic number.

It is an amenable number.

420955641 is a deficient number, since it is larger than the sum of its proper divisors (200029191).

420955641 is a wasteful number, since it uses less digits than its factorization.

420955641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995220 (or 995217 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 420955641 is about 20517.2035375194. The cubic root of 420955641 is about 749.4547984364.

The spelling of 420955641 in words is "four hundred twenty million, nine hundred fifty-five thousand, six hundred forty-one".