124749841 has 2 divisors, whose sum is σ = 124749842. Its totient is φ = 124749840.

The previous prime is 124749817. The next prime is 124749883. The reversal of 124749841 is 148947421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118722816 + 6027025 = 10896^2 + 2455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124749841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124749794 and 124749803.

It is not a weakly prime, because it can be changed into another prime (124749641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62374920 + 62374921.

It is an arithmetic number, because the mean of its divisors is an integer number (62374921).

Almost surely, 2^124749841 is an apocalyptic number.

It is an amenable number.

124749841 is a deficient number, since it is larger than the sum of its proper divisors (1).

124749841 is an equidigital number, since it uses as much as digits as its factorization.

124749841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 124749841 is about 11169.1468340245. The cubic root of 124749841 is about 499.6662319140. Note that the first 3 decimals are identical.

The spelling of 124749841 in words is "one hundred twenty-four million, seven hundred forty-nine thousand, eight hundred forty-one".