424233421 has 8 divisors (see below), whose sum is σ = 436383360. Its totient is φ = 412213728.

The previous prime is 424233409. The next prime is 424233497. The reversal of 424233421 is 124332424.

It is a happy number.

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 424233421 - 2⁵ = 424233389 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 (424233221) 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, 25936 + ... + 39001.

It is an arithmetic number, because the mean of its divisors is an integer number (54547920).

Almost surely, 2^424233421 is an apocalyptic number.

It is an amenable number.

424233421 is a deficient number, since it is larger than the sum of its proper divisors (12149939).

424233421 is a wasteful number, since it uses less digits than its factorization.

424233421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65123.

The product of its digits is 4608, while the sum is 25.

The square root of 424233421 is about 20596.9274650371. The cubic root of 424233421 is about 751.3949865562.

Adding to 424233421 its reverse (124332424), we get a palindrome (548565845).

The spelling of 424233421 in words is "four hundred twenty-four million, two hundred thirty-three thousand, four hundred twenty-one".