1424240440 has 192 divisors, whose sum is σ = 3889382400. Its totient is φ = 459613440.

The previous prime is 1424240429. The next prime is 1424240443. The reversal of 1424240440 is 440424241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424240443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18028321 + ... + 18028399.

It is an arithmetic number, because the mean of its divisors is an integer number (20257200).

Almost surely, 2^1424240440 is an apocalyptic number.

1424240440 is a gapful number since it is divisible by the number (10) 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 1424240440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944691200).

1424240440 is an abundant number, since it is smaller than the sum of its proper divisors (2465141960).

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

1424240440 is a wasteful number, since it uses less digits than its factorization.

1424240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1424240440 is about 37739.1102173859. The cubic root of 1424240440 is about 1125.1085827705.

Adding to 1424240440 its reverse (440424241), we get a palindrome (1864664681).

The spelling of 1424240440 in words is "one billion, four hundred twenty-four million, two hundred forty thousand, four hundred forty".