1342657 has 2 divisors, whose sum is σ = 1342658. Its totient is φ = 1342656.

The previous prime is 1342651. The next prime is 1342661. The reversal of 1342657 is 7562431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1073296 + 269361 = 1036^2 + 519^2 .

It is an emirp because it is prime and its reverse (7562431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1342651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671328 + 671329.

It is an arithmetic number, because the mean of its divisors is an integer number (671329).

2^1342657 is an apocalyptic number.

It is an amenable number.

1342657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342657 is an equidigital number, since it uses as much as digits as its factorization.

1342657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 1342657 is about 1158.7307711457. The cubic root of 1342657 is about 110.3201965194.

The spelling of 1342657 in words is "one million, three hundred forty-two thousand, six hundred fifty-seven".