423424421 has 8 divisors (see below), whose sum is σ = 488705664. Its totient is φ = 359341200.

The previous prime is 423424409. The next prime is 423424433. The reversal of 423424421 is 124424324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423424409) and next prime (423424433).

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-423424421 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 (423424021) 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, 298745 + ... + 300158.

It is an arithmetic number, because the mean of its divisors is an integer number (61088208).

Almost surely, 2^423424421 is an apocalyptic number.

It is an amenable number.

423424421 is a deficient number, since it is larger than the sum of its proper divisors (65281243).

423424421 is a wasteful number, since it uses less digits than its factorization.

423424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599011.

The product of its digits is 6144, while the sum is 26.

The square root of 423424421 is about 20577.2792419212. The cubic root of 423424421 is about 750.9170536339.

Adding to 423424421 its reverse (124424324), we get a palindrome (547848745).

The spelling of 423424421 in words is "four hundred twenty-three million, four hundred twenty-four thousand, four hundred twenty-one".