126390349 has 2 divisors, whose sum is σ = 126390350. Its totient is φ = 126390348.

The previous prime is 126390343. The next prime is 126390361. The reversal of 126390349 is 943093621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95942025 + 30448324 = 9795^2 + 5518^2 .

It is an emirp because it is prime and its reverse (943093621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126390349 - 2¹⁷ = 126259277 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 (126390343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63195174 + 63195175.

It is an arithmetic number, because the mean of its divisors is an integer number (63195175).

Almost surely, 2^126390349 is an apocalyptic number.

It is an amenable number.

126390349 is a deficient number, since it is larger than the sum of its proper divisors (1).

126390349 is an equidigital number, since it uses as much as digits as its factorization.

126390349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 126390349 is about 11242.3462408876. The cubic root of 126390349 is about 501.8469676867.

The spelling of 126390349 in words is "one hundred twenty-six million, three hundred ninety thousand, three hundred forty-nine".