103145149 has 2 divisors, whose sum is σ = 103145150. Its totient is φ = 103145148.

The previous prime is 103145123. The next prime is 103145173. The reversal of 103145149 is 941541301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95062500 + 8082649 = 9750^2 + 2843^2 .

It is a cyclic number.

It is not a de Polignac number, because 103145149 - 2⁵ = 103145117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103145249) 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, 51572574 + 51572575.

It is an arithmetic number, because the mean of its divisors is an integer number (51572575).

Almost surely, 2^103145149 is an apocalyptic number.

It is an amenable number.

103145149 is a deficient number, since it is larger than the sum of its proper divisors (1).

103145149 is an equidigital number, since it uses as much as digits as its factorization.

103145149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 103145149 is about 10156.0400255218. The cubic root of 103145149 is about 468.9749032993.

The spelling of 103145149 in words is "one hundred three million, one hundred forty-five thousand, one hundred forty-nine".