21480141 has 8 divisors (see below), whose sum is σ = 28685440. Its totient is φ = 14297472.

The previous prime is 21480131. The next prime is 21480157. The reversal of 21480141 is 14108412.

It is a happy number.

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

It is not a de Polignac number, because 21480141 - 2⁶ = 21480077 is a prime.

It is a super-2 number, since 2×21480141² = 922792914759762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21480101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3301 + ... + 7338.

It is an arithmetic number, because the mean of its divisors is an integer number (3585680).

Almost surely, 2^21480141 is an apocalyptic number.

It is an amenable number.

21480141 is a deficient number, since it is larger than the sum of its proper divisors (7205299).

21480141 is a wasteful number, since it uses less digits than its factorization.

21480141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11315.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 21480141 is about 4634.6673019754. The cubic root of 21480141 is about 277.9792481447.

Adding to 21480141 its reverse (14108412), we get a palindrome (35588553).

The spelling of 21480141 in words is "twenty-one million, four hundred eighty thousand, one hundred forty-one".