420100501 has 8 divisors (see below), whose sum is σ = 426323520. Its totient is φ = 413916288.

The previous prime is 420100487. The next prime is 420100517. The reversal of 420100501 is 105001024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420100501 - 2¹⁵ = 420067733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420100531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12480 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (53290440).

Almost surely, 2^420100501 is an apocalyptic number.

It is an amenable number.

420100501 is a deficient number, since it is larger than the sum of its proper divisors (6223019).

420100501 is a wasteful number, since it uses less digits than its factorization.

420100501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19403.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 420100501 is about 20496.3533585855. The cubic root of 420100501 is about 748.9469672250.

Adding to 420100501 its reverse (105001024), we get a palindrome (525101525).

The spelling of 420100501 in words is "four hundred twenty million, one hundred thousand, five hundred one".