21234063 has 8 divisors (see below), whose sum is σ = 28336176. Its totient is φ = 14144000.

The previous prime is 21234049. The next prime is 21234067. The reversal of 21234063 is 36043212.

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 21234063 - 2⁶ = 21233999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234067) 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, 2593 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (3542022).

Almost surely, 2^21234063 is an apocalyptic number.

21234063 is a deficient number, since it is larger than the sum of its proper divisors (7102113).

21234063 is a wasteful number, since it uses less digits than its factorization.

21234063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 21234063 is about 4608.0432940675. The cubic root of 21234063 is about 276.9136519644.

Adding to 21234063 its reverse (36043212), we get a palindrome (57277275).

The spelling of 21234063 in words is "twenty-one million, two hundred thirty-four thousand, sixty-three".