1340155001 has 2 divisors, whose sum is σ = 1340155002. Its totient is φ = 1340155000.

The previous prime is 1340154997. The next prime is 1340155009. The reversal of 1340155001 is 1005510431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942551401 + 397603600 = 30701^2 + 19940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340155001 - 2² = 1340154997 is a prime.

It is not a weakly prime, because it can be changed into another prime (1340155009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670077500 + 670077501.

It is an arithmetic number, because the mean of its divisors is an integer number (670077501).

Almost surely, 2^1340155001 is an apocalyptic number.

It is an amenable number.

1340155001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340155001 is an equidigital number, since it uses as much as digits as its factorization.

1340155001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1340155001 is about 36608.1275265480. The cubic root of 1340155001 is about 1102.5162784021.

Adding to 1340155001 its reverse (1005510431), we get a palindrome (2345665432).

The spelling of 1340155001 in words is "one billion, three hundred forty million, one hundred fifty-five thousand, one".