124408857 has 4 divisors (see below), whose sum is σ = 165878480. Its totient is φ = 82939236.

The previous prime is 124408807. The next prime is 124408877. The reversal of 124408857 is 758804421.

It is a happy number.

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: 758804421 = 3 ⋅252934807.

It is not a de Polignac number, because 124408857 - 2¹¹ = 124406809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124408807) 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 in 3 ways as a sum of consecutive naturals, for example, 20734807 + ... + 20734812.

It is an arithmetic number, because the mean of its divisors is an integer number (41469620).

Almost surely, 2^124408857 is an apocalyptic number.

It is an amenable number.

124408857 is a deficient number, since it is larger than the sum of its proper divisors (41469623).

124408857 is an equidigital number, since it uses as much as digits as its factorization.

124408857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41469622.

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 124408857 is about 11153.8718389625. The cubic root of 124408857 is about 499.2105635696.

The spelling of 124408857 in words is "one hundred twenty-four million, four hundred eight thousand, eight hundred fifty-seven".