1238197 has 2 divisors, whose sum is σ = 1238198. Its totient is φ = 1238196.

The previous prime is 1238189. The next prime is 1238201. The reversal of 1238197 is 7918321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 236196 = 1001^2 + 486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238197 - 2³ = 1238189 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1238137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619098 + 619099.

It is an arithmetic number, because the mean of its divisors is an integer number (619099).

2^1238197 is an apocalyptic number.

It is an amenable number.

1238197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1238197 is an equidigital number, since it uses as much as digits as its factorization.

1238197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1238197 is about 1112.7430071674. The cubic root of 1238197 is about 107.3816111491.

The spelling of 1238197 in words is "one million, two hundred thirty-eight thousand, one hundred ninety-seven".