124340121 has 6 divisors (see below), whose sum is σ = 179602410. Its totient is φ = 82893408.

The previous prime is 124340119. The next prime is 124340131. The reversal of 124340121 is 121043421.

124340121 is a `hidden beast` number, since 1 + 243 + 401 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 95824521 + 28515600 = 9789^2 + 5340^2 .

It is not a de Polignac number, because 124340121 - 2¹ = 124340119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124340094 and 124340103.

It is not an unprimeable number, because it can be changed into a prime (124340131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6907776 + ... + 6907793.

It is an arithmetic number, because the mean of its divisors is an integer number (29933735).

Almost surely, 2^124340121 is an apocalyptic number.

It is an amenable number.

124340121 is a deficient number, since it is larger than the sum of its proper divisors (55262289).

124340121 is a wasteful number, since it uses less digits than its factorization.

124340121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815575 (or 13815572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 124340121 is about 11150.7901513749. The cubic root of 124340121 is about 499.1186085445.

Adding to 124340121 its reverse (121043421), we get a palindrome (245383542).

The spelling of 124340121 in words is "one hundred twenty-four million, three hundred forty thousand, one hundred twenty-one".