1340424434 has 8 divisors (see below), whose sum is σ = 2011582188. Its totient is φ = 669897040.

The previous prime is 1340424403. The next prime is 1340424451. The reversal of 1340424434 is 4344240431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1244325625 + 96098809 = 35275^2 + 9803^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1340424397 and 1340424406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152237 + ... + 160800.

Almost surely, 2^1340424434 is an apocalyptic number.

1340424434 is a deficient number, since it is larger than the sum of its proper divisors (671157754).

1340424434 is a wasteful number, since it uses less digits than its factorization.

1340424434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315180.

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

The square root of 1340424434 is about 36611.8073031092. The cubic root of 1340424434 is about 1102.5901590013.

Adding to 1340424434 its reverse (4344240431), we get a palindrome (5684664865).

The spelling of 1340424434 in words is "one billion, three hundred forty million, four hundred twenty-four thousand, four hundred thirty-four".