420215340 has 24 divisors (see below), whose sum is σ = 1176603120. Its totient is φ = 112057408.

The previous prime is 420215339. The next prime is 420215377. The reversal of 420215340 is 43512024.

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, 3501735 + ... + 3501854.

It is an arithmetic number, because the mean of its divisors is an integer number (49025130).

Almost surely, 2^420215340 is an apocalyptic number.

It is an amenable number.

420215340 is an abundant number, since it is smaller than the sum of its proper divisors (756387780).

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

420215340 is a wasteful number, since it uses less digits than its factorization.

420215340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7003601 (or 7003599 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 420215340 is about 20499.1546167153. The cubic root of 420215340 is about 749.0152052495.

Adding to 420215340 its reverse (43512024), we get a palindrome (463727364).

The spelling of 420215340 in words is "four hundred twenty million, two hundred fifteen thousand, three hundred forty".