1340140434 has 16 divisors (see below), whose sum is σ = 2680780320. Its totient is φ = 446630240.

The previous prime is 1340140409. The next prime is 1340140441. The reversal of 1340140434 is 4340410431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20329 + ... + 55619.

It is an arithmetic number, because the mean of its divisors is an integer number (167548770).

Almost surely, 2^1340140434 is an apocalyptic number.

1340140434 is an abundant number, since it is smaller than the sum of its proper divisors (1340639886).

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

1340140434 is a wasteful number, since it uses less digits than its factorization.

1340140434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41625.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1340140434 is about 36607.9285674565. The cubic root of 1340140434 is about 1102.5122837366.

Adding to 1340140434 its reverse (4340410431), we get a palindrome (5680550865).

It can be divided in two parts, 13401 and 40434, that added together give a palindrome (53835).

The spelling of 1340140434 in words is "one billion, three hundred forty million, one hundred forty thousand, four hundred thirty-four".