126461221 has 2 divisors, whose sum is σ = 126461222. Its totient is φ = 126461220.

The previous prime is 126461201. The next prime is 126461239. The reversal of 126461221 is 122164621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119902500 + 6558721 = 10950^2 + 2561^2 .

It is a cyclic number.

It is not a de Polignac number, because 126461221 - 2⁵ = 126461189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126461201) 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, 63230610 + 63230611.

It is an arithmetic number, because the mean of its divisors is an integer number (63230611).

Almost surely, 2^126461221 is an apocalyptic number.

It is an amenable number.

126461221 is a deficient number, since it is larger than the sum of its proper divisors (1).

126461221 is an equidigital number, since it uses as much as digits as its factorization.

126461221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 126461221 is about 11245.4978102350. The cubic root of 126461221 is about 501.9407518844.

The spelling of 126461221 in words is "one hundred twenty-six million, four hundred sixty-one thousand, two hundred twenty-one".