97142449 has 2 divisors, whose sum is σ = 97142450. Its totient is φ = 97142448.

The previous prime is 97142417. The next prime is 97142483. The reversal of 97142449 is 94424179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69422224 + 27720225 = 8332^2 + 5265^2 .

It is an emirp because it is prime and its reverse (94424179) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97142449 - 2⁵ = 97142417 is a prime.

It is not a weakly prime, because it can be changed into another prime (97142249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48571224 + 48571225.

It is an arithmetic number, because the mean of its divisors is an integer number (48571225).

Almost surely, 2^97142449 is an apocalyptic number.

It is an amenable number.

97142449 is a deficient number, since it is larger than the sum of its proper divisors (1).

97142449 is an equidigital number, since it uses as much as digits as its factorization.

97142449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 97142449 is about 9856.0869009968. The cubic root of 97142449 is about 459.6948969236.

The spelling of 97142449 in words is "ninety-seven million, one hundred forty-two thousand, four hundred forty-nine".