124454221 has 2 divisors, whose sum is σ = 124454222. Its totient is φ = 124454220.

The previous prime is 124454203. The next prime is 124454257. The reversal of 124454221 is 122454421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123432100 + 1022121 = 11110^2 + 1011^2 .

It is an emirp because it is prime and its reverse (122454421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124454221 - 2⁹ = 124453709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124454021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62227110 + 62227111.

It is an arithmetic number, because the mean of its divisors is an integer number (62227111).

Almost surely, 2^124454221 is an apocalyptic number.

It is an amenable number.

124454221 is a deficient number, since it is larger than the sum of its proper divisors (1).

124454221 is an equidigital number, since it uses as much as digits as its factorization.

124454221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 25.

The square root of 124454221 is about 11155.9052075571. The cubic root of 124454221 is about 499.2712329800.

The spelling of 124454221 in words is "one hundred twenty-four million, four hundred fifty-four thousand, two hundred twenty-one".