1340304139 has 8 divisors (see below), whose sum is σ = 1421507232. Its totient is φ = 1261011840.

The previous prime is 1340304103. The next prime is 1340304143. The reversal of 1340304139 is 9314030431.

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 1340304139 - 2¹¹ = 1340302091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340304739) 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, 476254 + ... + 479059.

It is an arithmetic number, because the mean of its divisors is an integer number (177688404).

Almost surely, 2^1340304139 is an apocalyptic number.

1340304139 is a deficient number, since it is larger than the sum of its proper divisors (81203093).

1340304139 is an equidigital number, since it uses as much as digits as its factorization.

1340304139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955397.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1340304139 is about 36610.1644219198. The cubic root of 1340304139 is about 1102.5571744113.

The spelling of 1340304139 in words is "one billion, three hundred forty million, three hundred four thousand, one hundred thirty-nine".