124869949 has 4 divisors (see below), whose sum is σ = 124900380. Its totient is φ = 124839520.

The previous prime is 124869923. The next prime is 124869971. The reversal of 124869949 is 949968421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949968421 = 1051 ⋅903871.

It can be written as a sum of positive squares in 2 ways, for example, as 71944324 + 52925625 = 8482^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 124869949 - 2⁵ = 124869917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124869896 and 124869905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124866949) 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 in 3 ways as a sum of consecutive naturals, for example, 7882 + ... + 17659.

It is an arithmetic number, because the mean of its divisors is an integer number (31225095).

Almost surely, 2^124869949 is an apocalyptic number.

It is an amenable number.

124869949 is a deficient number, since it is larger than the sum of its proper divisors (30431).

124869949 is an equidigital number, since it uses as much as digits as its factorization.

124869949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30430.

The product of its digits is 1119744, while the sum is 52.

The square root of 124869949 is about 11174.5223164125. The cubic root of 124869949 is about 499.8265384958.

The spelling of 124869949 in words is "one hundred twenty-four million, eight hundred sixty-nine thousand, nine hundred forty-nine".