420301505 has 8 divisors (see below), whose sum is σ = 543158952. Its totient is φ = 310376448.

The previous prime is 420301499. The next prime is 420301507. The reversal of 420301505 is 505103024.

It can be written as a sum of positive squares in 4 ways, for example, as 1157776 + 419143729 = 1076^2 + 20473^2 .

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 420301505 - 2¹⁰ = 420300481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420301507) 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, 3233024 + ... + 3233153.

It is an arithmetic number, because the mean of its divisors is an integer number (67894869).

Almost surely, 2^420301505 is an apocalyptic number.

It is an amenable number.

420301505 is a deficient number, since it is larger than the sum of its proper divisors (122857447).

420301505 is a wasteful number, since it uses less digits than its factorization.

420301505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6466195.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 420301505 is about 20501.2561810246. The cubic root of 420301505 is about 749.0663968476.

Adding to 420301505 its reverse (505103024), we get a palindrome (925404529).

The spelling of 420301505 in words is "four hundred twenty million, three hundred one thousand, five hundred five".