420324620 has 24 divisors (see below), whose sum is σ = 904212288. Its totient is φ = 164028800.

The previous prime is 420324617. The next prime is 420324649. The reversal of 420324620 is 26423024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255476 + ... + 257115.

It is an arithmetic number, because the mean of its divisors is an integer number (37675512).

Almost surely, 2^420324620 is an apocalyptic number.

It is an amenable number.

420324620 is an abundant number, since it is smaller than the sum of its proper divisors (483887668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420324620 is a wasteful number, since it uses less digits than its factorization.

420324620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512641 (or 512639 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 420324620 is about 20501.8199192169. The cubic root of 420324620 is about 749.0801285395.

Adding to 420324620 its reverse (26423024), we get a palindrome (446747644).

The spelling of 420324620 in words is "four hundred twenty million, three hundred twenty-four thousand, six hundred twenty".