102144397 has 2 divisors, whose sum is σ = 102144398. Its totient is φ = 102144396.

The previous prime is 102144391. The next prime is 102144421. The reversal of 102144397 is 793441201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57668836 + 44475561 = 7594^2 + 6669^2 .

It is a cyclic number.

It is not a de Polignac number, because 102144397 - 2³ = 102144389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102144391) 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, 51072198 + 51072199.

It is an arithmetic number, because the mean of its divisors is an integer number (51072199).

Almost surely, 2^102144397 is an apocalyptic number.

It is an amenable number.

102144397 is a deficient number, since it is larger than the sum of its proper divisors (1).

102144397 is an equidigital number, since it uses as much as digits as its factorization.

102144397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 102144397 is about 10106.6511268570. The cubic root of 102144397 is about 467.4532493500.

Adding to 102144397 its reverse (793441201), we get a palindrome (895585598).

The spelling of 102144397 in words is "one hundred two million, one hundred forty-four thousand, three hundred ninety-seven".