420710241 has 16 divisors (see below), whose sum is σ = 644926464. Its totient is φ = 238964304.

The previous prime is 420710201. The next prime is 420710249. The reversal of 420710241 is 142017024.

It is a happy number.

It is not a de Polignac number, because 420710241 - 2⁶ = 420710177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (420710249) 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 15 ways as a sum of consecutive naturals, for example, 56475 + ... + 63488.

It is an arithmetic number, because the mean of its divisors is an integer number (40307904).

Almost surely, 2^420710241 is an apocalyptic number.

It is an amenable number.

420710241 is a deficient number, since it is larger than the sum of its proper divisors (224216223).

420710241 is a wasteful number, since it uses less digits than its factorization.

420710241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120140.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 420710241 is about 20511.2223185260. Note that the first 3 decimals coincide. The cubic root of 420710241 is about 749.3091362496.

Adding to 420710241 its reverse (142017024), we get a palindrome (562727265).

The spelling of 420710241 in words is "four hundred twenty million, seven hundred ten thousand, two hundred forty-one".