21014159 has 8 divisors (see below), whose sum is σ = 22412880. Its totient is φ = 19633536.

The previous prime is 21014131. The next prime is 21014167. The reversal of 21014159 is 95141012.

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 a de Polignac number, because none of the positive numbers 2^k-21014159 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 (21014179) 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, 2084 + ... + 6809.

It is an arithmetic number, because the mean of its divisors is an integer number (2801610).

Almost surely, 2^21014159 is an apocalyptic number.

21014159 is a deficient number, since it is larger than the sum of its proper divisors (1398721).

21014159 is a wasteful number, since it uses less digits than its factorization.

21014159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9049.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 21014159 is about 4584.1203081944. The cubic root of 21014159 is about 275.9544094338.

The spelling of 21014159 in words is "twenty-one million, fourteen thousand, one hundred fifty-nine".