124689049 has 4 divisors (see below), whose sum is σ = 130110336. Its totient is φ = 119267764.

The previous prime is 124689031. The next prime is 124689079. The reversal of 124689049 is 940986421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940986421 = 18379 ⋅51199.

It is a cyclic number.

It is not a de Polignac number, because 124689049 - 2⁵ = 124689017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124688996 and 124689014.

It is not an unprimeable number, because it can be changed into a prime (124689029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2710609 + ... + 2710654.

It is an arithmetic number, because the mean of its divisors is an integer number (32527584).

Almost surely, 2^124689049 is an apocalyptic number.

It is an amenable number.

124689049 is a deficient number, since it is larger than the sum of its proper divisors (5421287).

124689049 is an equidigital number, since it uses as much as digits as its factorization.

124689049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421286.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 124689049 is about 11166.4250769886. The cubic root of 124689049 is about 499.5850544022.

The spelling of 124689049 in words is "one hundred twenty-four million, six hundred eighty-nine thousand, forty-nine".