1340012423 has 8 divisors (see below), whose sum is σ = 1344635616. Its totient is φ = 1335398400.

The previous prime is 1340012419. The next prime is 1340012431. The reversal of 1340012423 is 3242100431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340012423 - 2² = 1340012419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340012395 and 1340012404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340012413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402815 + ... + 406127.

It is an arithmetic number, because the mean of its divisors is an integer number (168079452).

Almost surely, 2^1340012423 is an apocalyptic number.

1340012423 is a deficient number, since it is larger than the sum of its proper divisors (4623193).

1340012423 is an equidigital number, since it uses as much as digits as its factorization.

1340012423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1340012423 is about 36606.1801203021. The cubic root of 1340012423 is about 1102.4771784123.

Adding to 1340012423 its reverse (3242100431), we get a palindrome (4582112854).

The spelling of 1340012423 in words is "one billion, three hundred forty million, twelve thousand, four hundred twenty-three".