426123840 has 56 divisors (see below), whose sum is σ = 1352946240. Its totient is φ = 113632768.

The previous prime is 426123839. The next prime is 426123847. The reversal of 426123840 is 48321624.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 426123798 and 426123807.

It is not an unprimeable number, because it can be changed into a prime (426123847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220980 + ... + 222899.

Almost surely, 2^426123840 is an apocalyptic number.

426123840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426123840 is an abundant number, since it is smaller than the sum of its proper divisors (926822400).

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

426123840 is a wasteful number, since it uses less digits than its factorization.

426123840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443899 (or 443889 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 426123840 is about 20642.7672563540. The cubic root of 426123840 is about 752.5094254586.

The spelling of 426123840 in words is "four hundred twenty-six million, one hundred twenty-three thousand, eight hundred forty".