75242149 has 2 divisors, whose sum is σ = 75242150. Its totient is φ = 75242148.

The previous prime is 75242137. The next prime is 75242161. The reversal of 75242149 is 94124257.

It is a balanced prime because it is at equal distance from previous prime (75242137) and next prime (75242161).

It can be written as a sum of positive squares in only one way, i.e., 59954049 + 15288100 = 7743^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 75242149 - 2⁹ = 75241637 is a prime.

It is a super-2 number, since 2×75242149² = 11322761972276402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75242249) 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, 37621074 + 37621075.

It is an arithmetic number, because the mean of its divisors is an integer number (37621075).

Almost surely, 2^75242149 is an apocalyptic number.

It is an amenable number.

75242149 is a deficient number, since it is larger than the sum of its proper divisors (1).

75242149 is an equidigital number, since it uses as much as digits as its factorization.

75242149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 75242149 is about 8674.2232505280. The cubic root of 75242149 is about 422.1697036888.

The spelling of 75242149 in words is "seventy-five million, two hundred forty-two thousand, one hundred forty-nine".