124509901 has 2 divisors, whose sum is σ = 124509902. Its totient is φ = 124509900.

The previous prime is 124509881. The next prime is 124509923. The reversal of 124509901 is 109905421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117614025 + 6895876 = 10845^2 + 2626^2 .

It is a cyclic number.

It is not a de Polignac number, because 124509901 - 2¹¹ = 124507853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124509941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62254950 + 62254951.

It is an arithmetic number, because the mean of its divisors is an integer number (62254951).

Almost surely, 2^124509901 is an apocalyptic number.

It is an amenable number.

124509901 is a deficient number, since it is larger than the sum of its proper divisors (1).

124509901 is an equidigital number, since it uses as much as digits as its factorization.

124509901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 124509901 is about 11158.4004678090. The cubic root of 124509901 is about 499.3456787676.

The spelling of 124509901 in words is "one hundred twenty-four million, five hundred nine thousand, nine hundred one".