420015241 has 4 divisors (see below), whose sum is σ = 420088900. Its totient is φ = 419941584.

The previous prime is 420015223. The next prime is 420015251. The reversal of 420015241 is 142510024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73273600 + 346741641 = 8560^2 + 18621^2 .

It is a cyclic number.

It is not a de Polignac number, because 420015241 - 2¹¹ = 420013193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420015221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27486 + ... + 39943.

It is an arithmetic number, because the mean of its divisors is an integer number (105022225).

Almost surely, 2^420015241 is an apocalyptic number.

It is an amenable number.

420015241 is a deficient number, since it is larger than the sum of its proper divisors (73659).

420015241 is an equidigital number, since it uses as much as digits as its factorization.

420015241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73658.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 420015241 is about 20494.2733708712. The cubic root of 420015241 is about 748.8962971761.

Adding to 420015241 its reverse (142510024), we get a palindrome (562525265).

The spelling of 420015241 in words is "four hundred twenty million, fifteen thousand, two hundred forty-one".