75942397 has 2 divisors, whose sum is σ = 75942398. Its totient is φ = 75942396.

The previous prime is 75942379. The next prime is 75942401. The reversal of 75942397 is 79324957.

Together with previous prime (75942379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68657796 + 7284601 = 8286^2 + 2699^2 .

It is an emirp because it is prime and its reverse (79324957) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75942397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75942337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37971198 + 37971199.

It is an arithmetic number, because the mean of its divisors is an integer number (37971199).

Almost surely, 2^75942397 is an apocalyptic number.

It is an amenable number.

75942397 is a deficient number, since it is larger than the sum of its proper divisors (1).

75942397 is an equidigital number, since it uses as much as digits as its factorization.

75942397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 46.

The square root of 75942397 is about 8714.4935022065. The cubic root of 75942397 is about 423.4753155236.

The spelling of 75942397 in words is "seventy-five million, nine hundred forty-two thousand, three hundred ninety-seven".