1340149 has 2 divisors, whose sum is σ = 1340150. Its totient is φ = 1340148.

The previous prime is 1340113. The next prime is 1340153. The reversal of 1340149 is 9410431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688900 + 651249 = 830^2 + 807^2 .

It is an emirp because it is prime and its reverse (9410431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1340149 - 2⁷ = 1340021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1340159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670074 + 670075.

It is an arithmetic number, because the mean of its divisors is an integer number (670075).

2^1340149 is an apocalyptic number.

It is an amenable number.

1340149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340149 is an equidigital number, since it uses as much as digits as its factorization.

1340149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1340149 is about 1157.6480466878. The cubic root of 1340149 is about 110.2514632769.

The spelling of 1340149 in words is "one million, three hundred forty thousand, one hundred forty-nine".