4122749 has 2 divisors, whose sum is σ = 4122750. Its totient is φ = 4122748.

The previous prime is 4122731. The next prime is 4122751. The reversal of 4122749 is 9472214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 1849 = 2030^2 + 43^2 .

It is a cyclic number.

It is not a de Polignac number, because 4122749 - 2⁸ = 4122493 is a prime.

It is a Sophie Germain prime.

Together with 4122751, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4122709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2061374 + 2061375.

It is an arithmetic number, because the mean of its divisors is an integer number (2061375).

Almost surely, 2^4122749 is an apocalyptic number.

It is an amenable number.

4122749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4122749 is an equidigital number, since it uses as much as digits as its factorization.

4122749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 4122749 is about 2030.4553676454. The cubic root of 4122749 is about 160.3475388290.

The spelling of 4122749 in words is "four million, one hundred twenty-two thousand, seven hundred forty-nine".