21014359 has 4 divisors (see below), whose sum is σ = 21024016. Its totient is φ = 21004704.

The previous prime is 21014351. The next prime is 21014381. The reversal of 21014359 is 95341012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21014359 - 2³ = 21014351 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 (21014351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142 + ... + 6484.

It is an arithmetic number, because the mean of its divisors is an integer number (5256004).

Almost surely, 2^21014359 is an apocalyptic number.

21014359 is a deficient number, since it is larger than the sum of its proper divisors (9657).

21014359 is an equidigital number, since it uses as much as digits as its factorization.

21014359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 21014359 is about 4584.1421225787. The cubic root of 21014359 is about 275.9552848865.

The spelling of 21014359 in words is "twenty-one million, fourteen thousand, three hundred fifty-nine".