423438251 has 4 divisors (see below), whose sum is σ = 438039600. Its totient is φ = 408836904.

The previous prime is 423438241. The next prime is 423438259. The reversal of 423438251 is 152834324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423438251 - 2⁶ = 423438187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423438259) 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 3 ways as a sum of consecutive naturals, for example, 7300631 + ... + 7300688.

It is an arithmetic number, because the mean of its divisors is an integer number (109509900).

Almost surely, 2^423438251 is an apocalyptic number.

423438251 is a deficient number, since it is larger than the sum of its proper divisors (14601349).

423438251 is a wasteful number, since it uses less digits than its factorization.

423438251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14601348.

The product of its digits is 23040, while the sum is 32.

The square root of 423438251 is about 20577.6152894353. The cubic root of 423438251 is about 750.9252290951.

The spelling of 423438251 in words is "four hundred twenty-three million, four hundred thirty-eight thousand, two hundred fifty-one".