42522749 has 2 divisors, whose sum is σ = 42522750. Its totient is φ = 42522748.

The previous prime is 42522737. The next prime is 42522761. The reversal of 42522749 is 94722524.

42522749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (42522737) and next prime (42522761).

It can be written as a sum of positive squares in only one way, i.e., 38217124 + 4305625 = 6182^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 42522749 - 2¹⁶ = 42457213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42522349) 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, 21261374 + 21261375.

It is an arithmetic number, because the mean of its divisors is an integer number (21261375).

Almost surely, 2^42522749 is an apocalyptic number.

It is an amenable number.

42522749 is a deficient number, since it is larger than the sum of its proper divisors (1).

42522749 is an equidigital number, since it uses as much as digits as its factorization.

42522749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 42522749 is about 6520.9469404374. The cubic root of 42522749 is about 349.0388568762.

The spelling of 42522749 in words is "forty-two million, five hundred twenty-two thousand, seven hundred forty-nine".