1424145640 has 64 divisors (see below), whose sum is σ = 3258604800. Its totient is φ = 560072448.

The previous prime is 1424145631. The next prime is 1424145643. The reversal of 1424145640 is 465414241.

It is not an unprimeable number, because it can be changed into a prime (1424145643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874507 + ... + 876133.

It is an arithmetic number, because the mean of its divisors is an integer number (50915700).

Almost surely, 2^1424145640 is an apocalyptic number.

1424145640 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 1424145640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629302400).

1424145640 is an abundant number, since it is smaller than the sum of its proper divisors (1834459160).

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

1424145640 is a wasteful number, since it uses less digits than its factorization.

1424145640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 1424145640 is about 37737.8542050287. The cubic root of 1424145640 is about 1125.0836191344.

Adding to 1424145640 its reverse (465414241), we get a palindrome (1889559881).

The spelling of 1424145640 in words is "one billion, four hundred twenty-four million, one hundred forty-five thousand, six hundred forty".