420240422040 has 32 divisors (see below), whose sum is σ = 1260721266480. Its totient is φ = 112064112512.

The previous prime is 420240422023. The next prime is 420240422099. The reversal of 420240422040 is 40224042024.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 420240422040.

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, 1751001639 + ... + 1751001878.

Almost surely, 2^420240422040 is an apocalyptic number.

420240422040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420240422040 is an abundant number, since it is smaller than the sum of its proper divisors (840480844440).

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

420240422040 is a wasteful number, since it uses less digits than its factorization.

420240422040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3502003531 (or 3502003527 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 420240422040 its reverse (40224042024), we get a palindrome (460464464064).

The spelling of 420240422040 in words is "four hundred twenty billion, two hundred forty million, four hundred twenty-two thousand, forty".