124887409 has 8 divisors (see below), whose sum is σ = 127100160. Its totient is φ = 122694000.

The previous prime is 124887349. The next prime is 124887421. The reversal of 124887409 is 904788421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124887409 - 2⁷ = 124887281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124887439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8512 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (15887520).

Almost surely, 2^124887409 is an apocalyptic number.

It is an amenable number.

124887409 is a deficient number, since it is larger than the sum of its proper divisors (2212751).

124887409 is a wasteful number, since it uses less digits than its factorization.

124887409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 124887409 is about 11175.3035305534. The cubic root of 124887409 is about 499.8498335713.

The spelling of 124887409 in words is "one hundred twenty-four million, eight hundred eighty-seven thousand, four hundred nine".