21415141 has 8 divisors (see below), whose sum is σ = 24115968. Its totient is φ = 18840000.

The previous prime is 21415133. The next prime is 21415153. The reversal of 21415141 is 14151412.

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 21415141 - 2³ = 21415133 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 (21415181) 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, 31060 + ... + 31741.

It is an arithmetic number, because the mean of its divisors is an integer number (3014496).

Almost surely, 2^21415141 is an apocalyptic number.

It is an amenable number.

21415141 is a deficient number, since it is larger than the sum of its proper divisors (2700827).

21415141 is a wasteful number, since it uses less digits than its factorization.

21415141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62843.

The product of its digits is 160, while the sum is 19.

The square root of 21415141 is about 4627.6496194072. The cubic root of 21415141 is about 277.6985717224.

Adding to 21415141 its reverse (14151412), we get a palindrome (35566553).

The spelling of 21415141 in words is "twenty-one million, four hundred fifteen thousand, one hundred forty-one".