21714141 has 8 divisors (see below), whose sum is σ = 29568384. Its totient is φ = 14168000.

The previous prime is 21714137. The next prime is 21714149. The reversal of 21714141 is 14141712.

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 21714141 - 2² = 21714137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714149) 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, 76860 + ... + 77141.

It is an arithmetic number, because the mean of its divisors is an integer number (3696048).

Almost surely, 2^21714141 is an apocalyptic number.

It is an amenable number.

21714141 is a deficient number, since it is larger than the sum of its proper divisors (7854243).

21714141 is a wasteful number, since it uses less digits than its factorization.

21714141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154051.

The product of its digits is 224, while the sum is 21.

The square root of 21714141 is about 4659.8434523061. The cubic root of 21714141 is about 278.9850199431.

Adding to 21714141 its reverse (14141712), we get a palindrome (35855853).

The spelling of 21714141 in words is "twenty-one million, seven hundred fourteen thousand, one hundred forty-one".