126424549 has 2 divisors, whose sum is σ = 126424550. Its totient is φ = 126424548.

The previous prime is 126424489. The next prime is 126424577. The reversal of 126424549 is 945424621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112211649 + 14212900 = 10593^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 126424549 - 2⁹ = 126424037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126424579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63212274 + 63212275.

It is an arithmetic number, because the mean of its divisors is an integer number (63212275).

Almost surely, 2^126424549 is an apocalyptic number.

It is an amenable number.

126424549 is a deficient number, since it is larger than the sum of its proper divisors (1).

126424549 is an equidigital number, since it uses as much as digits as its factorization.

126424549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 126424549 is about 11243.8671728191. The cubic root of 126424549 is about 501.8922285751.

The spelling of 126424549 in words is "one hundred twenty-six million, four hundred twenty-four thousand, five hundred forty-nine".