420344132 has 12 divisors (see below), whose sum is σ = 792187116. Its totient is φ = 194004960.

The previous prime is 420344117. The next prime is 420344149. The reversal of 420344132 is 231443024.

It can be written as a sum of positive squares in 2 ways, for example, as 29333056 + 391011076 = 5416^2 + 19774^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420344098 and 420344107.

It is an unprimeable number.

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, 4041719 + ... + 4041822.

It is an arithmetic number, because the mean of its divisors is an integer number (66015593).

Almost surely, 2^420344132 is an apocalyptic number.

It is an amenable number.

420344132 is a deficient number, since it is larger than the sum of its proper divisors (371842984).

420344132 is a wasteful number, since it uses less digits than its factorization.

420344132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083558 (or 8083556 counting only the distinct ones).

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

The square root of 420344132 is about 20502.2957738883. The cubic root of 420344132 is about 749.0917194422.

Adding to 420344132 its reverse (231443024), we get a palindrome (651787156).

The spelling of 420344132 in words is "four hundred twenty million, three hundred forty-four thousand, one hundred thirty-two".