124040421 has 6 divisors (see below), whose sum is σ = 179169510. Its totient is φ = 82693608.

The previous prime is 124040387. The next prime is 124040431.

124040421 is a `hidden beast` number, since 1 + 240 + 4 + 0 + 421 = 666.

124040421 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 82901025 + 41139396 = 9105^2 + 6414^2 .

It is not a de Polignac number, because 124040421 - 2²⁶ = 56931557 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 124040394 and 124040403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124040431) 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, 6891126 + ... + 6891143.

It is an arithmetic number, because the mean of its divisors is an integer number (29861585).

Almost surely, 2^124040421 is an apocalyptic number.

It is an amenable number.

124040421 is a deficient number, since it is larger than the sum of its proper divisors (55129089).

124040421 is a wasteful number, since it uses less digits than its factorization.

124040421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782275 (or 13782272 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 124040421 is about 11137.3435342545. The cubic root of 124040421 is about 498.7172733722.

The spelling of 124040421 in words is "one hundred twenty-four million, forty thousand, four hundred twenty-one".