420216541 has 8 divisors (see below), whose sum is σ = 424042304. Its totient is φ = 416404800.

The previous prime is 420216539. The next prime is 420216547. The reversal of 420216541 is 145612024.

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 420216541 - 2¹ = 420216539 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 (420216547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62170 + ... + 68596.

It is an arithmetic number, because the mean of its divisors is an integer number (53005288).

Almost surely, 2^420216541 is an apocalyptic number.

It is an amenable number.

420216541 is a deficient number, since it is larger than the sum of its proper divisors (3825763).

420216541 is a wasteful number, since it uses less digits than its factorization.

420216541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 420216541 is about 20499.1839105853. The cubic root of 420216541 is about 749.0159188252.

Adding to 420216541 its reverse (145612024), we get a palindrome (565828565).

The spelling of 420216541 in words is "four hundred twenty million, two hundred sixteen thousand, five hundred forty-one".