4216423421 has 8 divisors (see below), whose sum is σ = 4838933760. Its totient is φ = 3598954128.

The previous prime is 4216423403. The next prime is 4216423423. The reversal of 4216423421 is 1243246124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4216423421 - 2²² = 4212229117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4216423423) 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, 1258466 + ... + 1261811.

It is an arithmetic number, because the mean of its divisors is an integer number (604866720).

Almost surely, 2^4216423421 is an apocalyptic number.

It is an amenable number.

4216423421 is a deficient number, since it is larger than the sum of its proper divisors (622510339).

4216423421 is a wasteful number, since it uses less digits than its factorization.

4216423421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520523.

The product of its digits is 9216, while the sum is 29.

The square root of 4216423421 is about 64933.9928003815. The cubic root of 4216423421 is about 1615.5289280885.

Adding to 4216423421 its reverse (1243246124), we get a palindrome (5459669545).

The spelling of 4216423421 in words is "four billion, two hundred sixteen million, four hundred twenty-three thousand, four hundred twenty-one".