124408217 has 2 divisors, whose sum is σ = 124408218. Its totient is φ = 124408216.

The previous prime is 124408199. The next prime is 124408243. The reversal of 124408217 is 712804421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90174016 + 34234201 = 9496^2 + 5851^2 .

It is a cyclic number.

It is not a de Polignac number, because 124408217 - 2⁸ = 124407961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124408217.

It is not a weakly prime, because it can be changed into another prime (124408247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62204108 + 62204109.

It is an arithmetic number, because the mean of its divisors is an integer number (62204109).

Almost surely, 2^124408217 is an apocalyptic number.

It is an amenable number.

124408217 is a deficient number, since it is larger than the sum of its proper divisors (1).

124408217 is an equidigital number, since it uses as much as digits as its factorization.

124408217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 124408217 is about 11153.8431493365. The cubic root of 124408217 is about 499.2097075338.

The spelling of 124408217 in words is "one hundred twenty-four million, four hundred eight thousand, two hundred seventeen".