21429014 has 8 divisors (see below), whose sum is σ = 32356848. Its totient is φ = 10643400.

The previous prime is 21429011. The next prime is 21429041. The reversal of 21429014 is 41092412.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21429011) 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, 35177 + ... + 35780.

It is an arithmetic number, because the mean of its divisors is an integer number (4044606).

Almost surely, 2^21429014 is an apocalyptic number.

21429014 is a deficient number, since it is larger than the sum of its proper divisors (10927834).

21429014 is a wasteful number, since it uses less digits than its factorization.

21429014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71110.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 21429014 is about 4629.1483017938. The cubic root of 21429014 is about 277.7585243307.

The spelling of 21429014 in words is "twenty-one million, four hundred twenty-nine thousand, fourteen".