420245415 has 24 divisors (see below), whose sum is σ = 755406288. Its totient is φ = 224130240.

The previous prime is 420245359. The next prime is 420245417. The reversal of 420245415 is 514542024.

420245415 is a `hidden beast` number, since 4 + 2 + 0 + 245 + 415 = 666.

It is not a de Polignac number, because 420245415 - 2¹⁸ = 419983271 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 (420245417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171726 + ... + 174155.

It is an arithmetic number, because the mean of its divisors is an integer number (31475262).

Almost surely, 2^420245415 is an apocalyptic number.

420245415 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

420245415 is a deficient number, since it is larger than the sum of its proper divisors (335160873).

420245415 is an equidigital number, since it uses as much as digits as its factorization.

420245415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345901 (or 345889 counting only the distinct ones).

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

The square root of 420245415 is about 20499.8881704267. Note that the first 3 decimals coincide. The cubic root of 420245415 is about 749.0330739410.

Adding to 420245415 its reverse (514542024), we get a palindrome (934787439).

The spelling of 420245415 in words is "four hundred twenty million, two hundred forty-five thousand, four hundred fifteen".