124545661 has 2 divisors, whose sum is σ = 124545662. Its totient is φ = 124545660.

The previous prime is 124545653. The next prime is 124545671. The reversal of 124545661 is 166545421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118265625 + 6280036 = 10875^2 + 2506^2 .

It is a cyclic number.

It is not a de Polignac number, because 124545661 - 2³ = 124545653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124545671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62272830 + 62272831.

It is an arithmetic number, because the mean of its divisors is an integer number (62272831).

Almost surely, 2^124545661 is an apocalyptic number.

It is an amenable number.

124545661 is a deficient number, since it is larger than the sum of its proper divisors (1).

124545661 is an equidigital number, since it uses as much as digits as its factorization.

124545661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 34.

The square root of 124545661 is about 11160.0027329746. The cubic root of 124545661 is about 499.3934792293.

The spelling of 124545661 in words is "one hundred twenty-four million, five hundred forty-five thousand, six hundred sixty-one".