21114743 has 8 divisors (see below), whose sum is σ = 23125200. Its totient is φ = 19159488.

The previous prime is 21114727. The next prime is 21114749. The reversal of 21114743 is 34741112.

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 not a de Polignac number, because 21114743 - 2⁴ = 21114727 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 (21114749) 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, 12998 + ... + 14531.

It is an arithmetic number, because the mean of its divisors is an integer number (2890650).

Almost surely, 2^21114743 is an apocalyptic number.

21114743 is a deficient number, since it is larger than the sum of its proper divisors (2010457).

21114743 is a wasteful number, since it uses less digits than its factorization.

21114743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27601.

The product of its digits is 672, while the sum is 23.

The square root of 21114743 is about 4595.0781277362. The cubic root of 21114743 is about 276.3939928940.

Adding to 21114743 its reverse (34741112), we get a palindrome (55855855).

The spelling of 21114743 in words is "twenty-one million, one hundred fourteen thousand, seven hundred forty-three".