1200342397 has 2 divisors, whose sum is σ = 1200342398. Its totient is φ = 1200342396.

The previous prime is 1200342379. The next prime is 1200342421. The reversal of 1200342397 is 7932430021.

Together with previous prime (1200342379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1103634841 + 96707556 = 33221^2 + 9834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200342397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200342697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600171198 + 600171199.

It is an arithmetic number, because the mean of its divisors is an integer number (600171199).

Almost surely, 2^1200342397 is an apocalyptic number.

It is an amenable number.

1200342397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200342397 is an equidigital number, since it uses as much as digits as its factorization.

1200342397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 1200342397 is about 34645.9578738992. The cubic root of 1200342397 is about 1062.7596293231.

The spelling of 1200342397 in words is "one billion, two hundred million, three hundred forty-two thousand, three hundred ninety-seven".