1340434424 has 16 divisors (see below), whose sum is σ = 2872359600. Its totient is φ = 574471872.

The previous prime is 1340434423. The next prime is 1340434427. The reversal of 1340434424 is 4244340431.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340434421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11968109 + ... + 11968220.

It is an arithmetic number, because the mean of its divisors is an integer number (179522475).

Almost surely, 2^1340434424 is an apocalyptic number.

1340434424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340434424 is an abundant number, since it is smaller than the sum of its proper divisors (1531925176).

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

1340434424 is a wasteful number, since it uses less digits than its factorization.

1340434424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23936342 (or 23936338 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 1340434424 is about 36611.9437342515. The cubic root of 1340434424 is about 1102.5928981457.

Adding to 1340434424 its reverse (4244340431), we get a palindrome (5584774855).

The spelling of 1340434424 in words is "one billion, three hundred forty million, four hundred thirty-four thousand, four hundred twenty-four".