423430121 has 4 divisors (see below), whose sum is σ = 426662544. Its totient is φ = 420197700.

The previous prime is 423430103. The next prime is 423430171. The reversal of 423430121 is 121034324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423430121 - 2¹⁴ = 423413737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423430093 and 423430102.

It is not an unprimeable number, because it can be changed into a prime (423430171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616015 + ... + 1616276.

It is an arithmetic number, because the mean of its divisors is an integer number (106665636).

Almost surely, 2^423430121 is an apocalyptic number.

It is an amenable number.

423430121 is a deficient number, since it is larger than the sum of its proper divisors (3232423).

423430121 is a wasteful number, since it uses less digits than its factorization.

423430121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3232422.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 423430121 is about 20577.4177437306. The cubic root of 423430121 is about 750.9204231514.

Adding to 423430121 its reverse (121034324), we get a palindrome (544464445).

The spelling of 423430121 in words is "four hundred twenty-three million, four hundred thirty thousand, one hundred twenty-one".