124045217 has 2 divisors, whose sum is σ = 124045218. Its totient is φ = 124045216.

The previous prime is 124045211. The next prime is 124045219. The reversal of 124045217 is 712540421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105863521 + 18181696 = 10289^2 + 4264^2 .

It is a cyclic number.

It is not a de Polignac number, because 124045217 - 2⁸ = 124044961 is a prime.

Together with 124045219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (124045211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62022608 + 62022609.

It is an arithmetic number, because the mean of its divisors is an integer number (62022609).

Almost surely, 2^124045217 is an apocalyptic number.

It is an amenable number.

124045217 is a deficient number, since it is larger than the sum of its proper divisors (1).

124045217 is an equidigital number, since it uses as much as digits as its factorization.

124045217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 124045217 is about 11137.5588438401. The cubic root of 124045217 is about 498.7237008932.

Adding to 124045217 its reverse (712540421), we get a palindrome (836585638).

The spelling of 124045217 in words is "one hundred twenty-four million, forty-five thousand, two hundred seventeen".