420323332340 has 24 divisors (see below), whose sum is σ = 882725522280. Its totient is φ = 168120471168.

The previous prime is 420323332333. The next prime is 420323332357. The reversal of 420323332340 is 43233323024.

It can be written as a sum of positive squares in 4 ways, for example, as 13654389904 + 406668942436 = 116852^2 + 637706^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158027 + ... + 930386.

It is an arithmetic number, because the mean of its divisors is an integer number (36780230095).

Almost surely, 2^420323332340 is an apocalyptic number.

It is an amenable number.

420323332340 is an abundant number, since it is smaller than the sum of its proper divisors (462402189940).

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

420323332340 is a wasteful number, since it uses less digits than its factorization.

420323332340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107731 (or 1107729 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 29.

Adding to 420323332340 its reverse (43233323024), we get a palindrome (463556655364).

The spelling of 420323332340 in words is "four hundred twenty billion, three hundred twenty-three million, three hundred thirty-two thousand, three hundred forty".