426424240 has 80 divisors (see below), whose sum is σ = 1088207136. Its totient is φ = 154112000.

The previous prime is 426424237. The next prime is 426424291. The reversal of 426424240 is 42424624.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 426424199 and 426424208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150840 + ... + 153640.

Almost surely, 2^426424240 is an apocalyptic number.

426424240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426424240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (544103568).

426424240 is an abundant number, since it is smaller than the sum of its proper divisors (661782896).

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

426424240 is a wasteful number, since it uses less digits than its factorization.

426424240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 426424240 is about 20650.0421307076. The cubic root of 426424240 is about 752.6862134494.

Adding to 426424240 its reverse (42424624), we get a palindrome (468848864).

The spelling of 426424240 in words is "four hundred twenty-six million, four hundred twenty-four thousand, two hundred forty".