420034302440 has 16 divisors (see below), whose sum is σ = 945077180580. Its totient is φ = 168013720960.

The previous prime is 420034302439. The next prime is 420034302481. The reversal of 420034302440 is 44203430024.

It can be written as a sum of positive squares in 2 ways, for example, as 388181333764 + 31852968676 = 623042^2 + 178474^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5250428741 + ... + 5250428820.

Almost surely, 2^420034302440 is an apocalyptic number.

420034302440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420034302440 is an abundant number, since it is smaller than the sum of its proper divisors (525042878140).

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

420034302440 is a wasteful number, since it uses less digits than its factorization.

420034302440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500857572 (or 10500857568 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 420034302440 its reverse (44203430024), we get a palindrome (464237732464).

The spelling of 420034302440 in words is "four hundred twenty billion, thirty-four million, three hundred two thousand, four hundred forty".