124557121 has 8 divisors (see below), whose sum is σ = 139970880. Its totient is φ = 109976592.

The previous prime is 124557119. The next prime is 124557137. The reversal of 124557121 is 121755421.

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 124557121 - 2¹ = 124557119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 124557121.

It is not an unprimeable number, because it can be changed into a prime (124557161) 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, 207991 + ... + 208588.

It is an arithmetic number, because the mean of its divisors is an integer number (17496360).

Almost surely, 2^124557121 is an apocalyptic number.

It is an amenable number.

124557121 is a deficient number, since it is larger than the sum of its proper divisors (15413759).

124557121 is a wasteful number, since it uses less digits than its factorization.

124557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416615.

The product of its digits is 2800, while the sum is 28.

The square root of 124557121 is about 11160.5161618986. The cubic root of 124557121 is about 499.4087958976.

The spelling of 124557121 in words is "one hundred twenty-four million, five hundred fifty-seven thousand, one hundred twenty-one".