426720422040 has 128 divisors (see below), whose sum is σ = 1396709222400. Its totient is φ = 103434808320.

The previous prime is 426720422027. The next prime is 426720422047. The reversal of 426720422040 is 40224027624.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 426720421992 and 426720422010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426720422047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15486996 + ... + 15514524.

It is an arithmetic number, because the mean of its divisors is an integer number (10911790800).

Almost surely, 2^426720422040 is an apocalyptic number.

426720422040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426720422040 is an abundant number, since it is smaller than the sum of its proper divisors (969988800360).

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

426720422040 is a wasteful number, since it uses less digits than its factorization.

426720422040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39297 (or 39293 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 33.

Adding to 426720422040 its reverse (40224027624), we get a palindrome (466944449664).

The spelling of 426720422040 in words is "four hundred twenty-six billion, seven hundred twenty million, four hundred twenty-two thousand, forty".