420115340 has 12 divisors (see below), whose sum is σ = 882242256. Its totient is φ = 168046128.

The previous prime is 420115331. The next prime is 420115343. The reversal of 420115340 is 43511024.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21005767 = 420115340 / (4 + 2 + 0 + 1 + 1 + 5 + 3 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (420115343) 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 3 ways as a sum of consecutive naturals, for example, 10502864 + ... + 10502903.

It is an arithmetic number, because the mean of its divisors is an integer number (73520188).

Almost surely, 2^420115340 is an apocalyptic number.

It is an amenable number.

420115340 is an abundant number, since it is smaller than the sum of its proper divisors (462126916).

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

420115340 is a wasteful number, since it uses less digits than its factorization.

420115340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21005776 (or 21005774 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 420115340 is about 20496.7153466110. The cubic root of 420115340 is about 748.9557853476.

Adding to 420115340 its reverse (43511024), we get a palindrome (463626364).

The spelling of 420115340 in words is "four hundred twenty million, one hundred fifteen thousand, three hundred forty".