21132041 has 8 divisors (see below), whose sum is σ = 24194880. Its totient is φ = 18080208.

The previous prime is 21132011. The next prime is 21132061. The reversal of 21132041 is 14023112.

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 21132041 - 2⁶ = 21131977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132011) 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, 1895 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (3024360).

Almost surely, 2^21132041 is an apocalyptic number.

It is an amenable number.

21132041 is a deficient number, since it is larger than the sum of its proper divisors (3062839).

21132041 is an equidigital number, since it uses as much as digits as its factorization.

21132041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5503.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21132041 is about 4596.9599737218. The cubic root of 21132041 is about 276.4694497801.

Adding to 21132041 its reverse (14023112), we get a palindrome (35155153).

The spelling of 21132041 in words is "twenty-one million, one hundred thirty-two thousand, forty-one".