124140321 has 6 divisors (see below), whose sum is σ = 179313810. Its totient is φ = 82760208.

The previous prime is 124140293. The next prime is 124140343. The reversal of 124140321 is 123041421.

124140321 is a `hidden beast` number, since 1 + 241 + 403 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 117483921 + 6656400 = 10839^2 + 2580^2 .

It is not a de Polignac number, because 124140321 - 2⁷ = 124140193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 124140294 and 124140303.

It is not an unprimeable number, because it can be changed into a prime (124140391) 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, 6896676 + ... + 6896693.

It is an arithmetic number, because the mean of its divisors is an integer number (29885635).

Almost surely, 2^124140321 is an apocalyptic number.

It is an amenable number.

124140321 is a deficient number, since it is larger than the sum of its proper divisors (55173489).

124140321 is a wasteful number, since it uses less digits than its factorization.

124140321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13793375 (or 13793372 counting only the distinct ones).

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

The square root of 124140321 is about 11141.8275430918. The cubic root of 124140321 is about 498.8511235209.

Adding to 124140321 its reverse (123041421), we get a palindrome (247181742).

The spelling of 124140321 in words is "one hundred twenty-four million, one hundred forty thousand, three hundred twenty-one".