428421101 has 8 divisors (see below), whose sum is σ = 459479520. Its totient is φ = 398213712.

The previous prime is 428421073. The next prime is 428421109. The reversal of 428421101 is 101124824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428421101 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 (428421109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211715 + ... + 213728.

It is an arithmetic number, because the mean of its divisors is an integer number (57434940).

Almost surely, 2^428421101 is an apocalyptic number.

It is an amenable number.

428421101 is a deficient number, since it is larger than the sum of its proper divisors (31058419).

428421101 is a wasteful number, since it uses less digits than its factorization.

428421101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425515.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 428421101 is about 20698.3357060417. The cubic root of 428421101 is about 753.8592781964.

Adding to 428421101 its reverse (101124824), we get a palindrome (529545925).

The spelling of 428421101 in words is "four hundred twenty-eight million, four hundred twenty-one thousand, one hundred one".