420323245 has 16 divisors (see below), whose sum is σ = 530345520. Its totient is φ = 319334400.

The previous prime is 420323221. The next prime is 420323251. The reversal of 420323245 is 542323024.

It can be written as a sum of positive squares in 8 ways, for example, as 7502121 + 412821124 = 2739^2 + 20318^2 .

It is not a de Polignac number, because 420323245 - 2⁷ = 420323117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14916 + ... + 32605.

It is an arithmetic number, because the mean of its divisors is an integer number (33146595).

Almost surely, 2^420323245 is an apocalyptic number.

It is an amenable number.

420323245 is a deficient number, since it is larger than the sum of its proper divisors (110022275).

420323245 is a wasteful number, since it uses less digits than its factorization.

420323245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47616.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 420323245 is about 20501.7863855811. The cubic root of 420323245 is about 749.0793117214.

Adding to 420323245 its reverse (542323024), we get a palindrome (962646269).

The spelling of 420323245 in words is "four hundred twenty million, three hundred twenty-three thousand, two hundred forty-five".