1230442397 has 2 divisors, whose sum is σ = 1230442398. Its totient is φ = 1230442396.

The previous prime is 1230442379. The next prime is 1230442457. The reversal of 1230442397 is 7932440321.

Together with previous prime (1230442379) 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., 885003001 + 345439396 = 29749^2 + 18586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230442397 - 2²⁶ = 1163333533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230442597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615221198 + 615221199.

It is an arithmetic number, because the mean of its divisors is an integer number (615221199).

Almost surely, 2^1230442397 is an apocalyptic number.

It is an amenable number.

1230442397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230442397 is an equidigital number, since it uses as much as digits as its factorization.

1230442397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 1230442397 is about 35077.6623651007. The cubic root of 1230442397 is about 1071.5697102290.

The spelling of 1230442397 in words is "one billion, two hundred thirty million, four hundred forty-two thousand, three hundred ninety-seven".