124239949 has 2 divisors, whose sum is σ = 124239950. Its totient is φ = 124239948.

The previous prime is 124239937. The next prime is 124239967. The reversal of 124239949 is 949932421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108889225 + 15350724 = 10435^2 + 3918^2 .

It is a cyclic number.

It is not a de Polignac number, because 124239949 - 2¹⁹ = 123715661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124239919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62119974 + 62119975.

It is an arithmetic number, because the mean of its divisors is an integer number (62119975).

Almost surely, 2^124239949 is an apocalyptic number.

It is an amenable number.

124239949 is a deficient number, since it is larger than the sum of its proper divisors (1).

124239949 is an equidigital number, since it uses as much as digits as its factorization.

124239949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 124239949 is about 11146.2975467193. The cubic root of 124239949 is about 498.9845377356.

The spelling of 124239949 in words is "one hundred twenty-four million, two hundred thirty-nine thousand, nine hundred forty-nine".