21014373 has 8 divisors (see below), whose sum is σ = 28923136. Its totient is φ = 13557600.

The previous prime is 21014351. The next prime is 21014381. The reversal of 21014373 is 37341012.

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

It is not a de Polignac number, because 21014373 - 2¹⁴ = 20997989 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 (21014303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112888 + ... + 113073.

It is an arithmetic number, because the mean of its divisors is an integer number (3615392).

Almost surely, 2^21014373 is an apocalyptic number.

It is an amenable number.

21014373 is a deficient number, since it is larger than the sum of its proper divisors (7908763).

21014373 is a wasteful number, since it uses less digits than its factorization.

21014373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225995.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 21014373 is about 4584.1436495817. The cubic root of 21014373 is about 275.9553461680.

Adding to 21014373 its reverse (37341012), we get a palindrome (58355385).

The spelling of 21014373 in words is "twenty-one million, fourteen thousand, three hundred seventy-three".