1340206039 has 2 divisors, whose sum is σ = 1340206040. Its totient is φ = 1340206038.

The previous prime is 1340206031. The next prime is 1340206079. The reversal of 1340206039 is 9306020431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1340206039 - 2³ = 1340206031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1340205998 and 1340206016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340206031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670103019 + 670103020.

It is an arithmetic number, because the mean of its divisors is an integer number (670103020).

Almost surely, 2^1340206039 is an apocalyptic number.

1340206039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340206039 is an equidigital number, since it uses as much as digits as its factorization.

1340206039 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1340206039 is about 36608.8246055511. The cubic root of 1340206039 is about 1102.5302741741.

The spelling of 1340206039 in words is "one billion, three hundred forty million, two hundred six thousand, thirty-nine".