423021001 has 8 divisors (see below), whose sum is σ = 455893760. Its totient is φ = 390195792.

The previous prime is 423020993. The next prime is 423021019. The reversal of 423021001 is 100120324.

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 423021001 - 2³ = 423020993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423021101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7816 + ... + 30118.

It is an arithmetic number, because the mean of its divisors is an integer number (56986720).

Almost surely, 2^423021001 is an apocalyptic number.

It is an amenable number.

423021001 is a deficient number, since it is larger than the sum of its proper divisors (32872759).

423021001 is a wasteful number, since it uses less digits than its factorization.

423021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23775.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 423021001 is about 20567.4743466474. The cubic root of 423021001 is about 750.6784977064.

Adding to 423021001 its reverse (100120324), we get a palindrome (523141325).

The spelling of 423021001 in words is "four hundred twenty-three million, twenty-one thousand, one".