420415245 has 32 divisors (see below), whose sum is σ = 748880640. Its totient is φ = 223778880.

The previous prime is 420415243. The next prime is 420415267. The reversal of 420415245 is 542514024.

420415245 is a `hidden beast` number, since 4 + 2 + 0 + 415 + 245 = 666.

It is not a de Polignac number, because 420415245 - 2¹ = 420415243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420415241) 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 31 ways as a sum of consecutive naturals, for example, 72400 + ... + 77990.

It is an arithmetic number, because the mean of its divisors is an integer number (23402520).

Almost surely, 2^420415245 is an apocalyptic number.

420415245 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420415245 is a deficient number, since it is larger than the sum of its proper divisors (328465395).

420415245 is a wasteful number, since it uses less digits than its factorization.

420415245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162 (or 6156 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 420415245 is about 20504.0299697401. The cubic root of 420415245 is about 749.1339603520.

Adding to 420415245 its reverse (542514024), we get a palindrome (962929269).

The spelling of 420415245 in words is "four hundred twenty million, four hundred fifteen thousand, two hundred forty-five".