1210397 has 2 divisors, whose sum is σ = 1210398. Its totient is φ = 1210396.

The previous prime is 1210393. The next prime is 1210399. The reversal of 1210397 is 7930121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1094116 + 116281 = 1046^2 + 341^2 .

It is an emirp because it is prime and its reverse (7930121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1210397 - 2² = 1210393 is a prime.

Together with 1210399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605198 + 605199.

It is an arithmetic number, because the mean of its divisors is an integer number (605199).

2^1210397 is an apocalyptic number.

It is an amenable number.

1210397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210397 is an equidigital number, since it uses as much as digits as its factorization.

1210397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 1210397 is about 1100.1804397461. The cubic root of 1210397 is about 106.5718765094.

The spelling of 1210397 in words is "one million, two hundred ten thousand, three hundred ninety-seven".