1340012424 has 64 divisors (see below), whose sum is σ = 3482216640. Its totient is φ = 429338880.

The previous prime is 1340012419. The next prime is 1340012431. The reversal of 1340012424 is 4242100431.

It is a self number, because there is not a number n which added to its sum of digits gives 1340012424.

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, 64614 + ... + 82794.

It is an arithmetic number, because the mean of its divisors is an integer number (54409635).

Almost surely, 2^1340012424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1340012424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741108320).

1340012424 is an abundant number, since it is smaller than the sum of its proper divisors (2142204216).

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

1340012424 is a wasteful number, since it uses less digits than its factorization.

1340012424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310 (or 18306 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1340012424 is about 36606.1801339610. The cubic root of 1340012424 is about 1102.4771786865.

Adding to 1340012424 its reverse (4242100431), we get a palindrome (5582112855).

The spelling of 1340012424 in words is "one billion, three hundred forty million, twelve thousand, four hundred twenty-four".