124969109 has 2 divisors, whose sum is σ = 124969110. Its totient is φ = 124969108.

The previous prime is 124969093. The next prime is 124969123. The reversal of 124969109 is 901969421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116100625 + 8868484 = 10775^2 + 2978^2 .

It is a cyclic number.

It is not a de Polignac number, because 124969109 - 2⁴ = 124969093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124969709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62484554 + 62484555.

It is an arithmetic number, because the mean of its divisors is an integer number (62484555).

Almost surely, 2^124969109 is an apocalyptic number.

It is an amenable number.

124969109 is a deficient number, since it is larger than the sum of its proper divisors (1).

124969109 is an equidigital number, since it uses as much as digits as its factorization.

124969109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 124969109 is about 11178.9583146195. The cubic root of 124969109 is about 499.9588086066.

The spelling of 124969109 in words is "one hundred twenty-four million, nine hundred sixty-nine thousand, one hundred nine".