216421041 has 8 divisors (see below), whose sum is σ = 294701184. Its totient is φ = 141210800.

The previous prime is 216421031. The next prime is 216421087. The reversal of 216421041 is 140124612.

It is a happy number.

216421041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 216421041 - 2¹⁸ = 216158897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216420999 and 216421017.

It is not an unprimeable number, because it can be changed into a prime (216421031) 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, 767310 + ... + 767591.

It is an arithmetic number, because the mean of its divisors is an integer number (36837648).

Almost surely, 2^216421041 is an apocalyptic number.

It is an amenable number.

216421041 is a deficient number, since it is larger than the sum of its proper divisors (78280143).

216421041 is a wasteful number, since it uses less digits than its factorization.

216421041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534951.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 216421041 is about 14711.2555888340. The cubic root of 216421041 is about 600.3895997431.

Adding to 216421041 its reverse (140124612), we get a palindrome (356545653).

The spelling of 216421041 in words is "two hundred sixteen million, four hundred twenty-one thousand, forty-one".