102242149 has 2 divisors, whose sum is σ = 102242150. Its totient is φ = 102242148.

The previous prime is 102242143. The next prime is 102242159. The reversal of 102242149 is 941242201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53144100 + 49098049 = 7290^2 + 7007^2 .

It is a cyclic number.

It is not a de Polignac number, because 102242149 - 2⁹ = 102241637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102242143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51121074 + 51121075.

It is an arithmetic number, because the mean of its divisors is an integer number (51121075).

Almost surely, 2^102242149 is an apocalyptic number.

It is an amenable number.

102242149 is a deficient number, since it is larger than the sum of its proper divisors (1).

102242149 is an equidigital number, since it uses as much as digits as its factorization.

102242149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 102242149 is about 10111.4859936609. The cubic root of 102242149 is about 467.6023191068.

The spelling of 102242149 in words is "one hundred two million, two hundred forty-two thousand, one hundred forty-nine".