102132449 has 2 divisors, whose sum is σ = 102132450. Its totient is φ = 102132448.

The previous prime is 102132409. The next prime is 102132473. The reversal of 102132449 is 944231201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 28430224 = 8585^2 + 5332^2 .

It is a cyclic number.

It is not a de Polignac number, because 102132449 - 2⁸ = 102132193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102132409) 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, 51066224 + 51066225.

It is an arithmetic number, because the mean of its divisors is an integer number (51066225).

Almost surely, 2^102132449 is an apocalyptic number.

It is an amenable number.

102132449 is a deficient number, since it is larger than the sum of its proper divisors (1).

102132449 is an equidigital number, since it uses as much as digits as its factorization.

102132449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 102132449 is about 10106.0600136750. The cubic root of 102132449 is about 467.4350223780.

The spelling of 102132449 in words is "one hundred two million, one hundred thirty-two thousand, four hundred forty-nine".