21141710 has 16 divisors (see below), whose sum is σ = 40293936. Its totient is φ = 7959168.

The previous prime is 21141707. The next prime is 21141713. The reversal of 21141710 is 1714112.

It is an interprime number because it is at equal distance from previous prime (21141707) and next prime (21141713).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21141713) 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, 62012 + ... + 62351.

It is an arithmetic number, because the mean of its divisors is an integer number (2518371).

Almost surely, 2^21141710 is an apocalyptic number.

21141710 is a deficient number, since it is larger than the sum of its proper divisors (19152226).

21141710 is a wasteful number, since it uses less digits than its factorization.

21141710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124387.

The product of its (nonzero) digits is 56, while the sum is 17.

The square root of 21141710 is about 4598.0115267363. The cubic root of 21141710 is about 276.5116097006.

Adding to 21141710 its reverse (1714112), we get a palindrome (22855822).

The spelling of 21141710 in words is "twenty-one million, one hundred forty-one thousand, seven hundred ten".