124404242303021 has 16 divisors (see below), whose sum is σ = 135180859107840. Its totient is φ = 114050796456960.

The previous prime is 124404242302973. The next prime is 124404242303053. The reversal of 124404242303021 is 120303242404421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 124404242303021 - 2⁶ = 124404242302957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124404242303321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13032821 + ... + 20461253.

It is an arithmetic number, because the mean of its divisors is an integer number (8448803694240).

Almost surely, 2^{124404242303021} is an apocalyptic number.

It is an amenable number.

124404242303021 is a deficient number, since it is larger than the sum of its proper divisors (10776616804819).

124404242303021 is a wasteful number, since it uses less digits than its factorization.

124404242303021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7456916.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 124404242303021 its reverse (120303242404421), we get a palindrome (244707484707442).

The spelling of 124404242303021 in words is "one hundred twenty-four trillion, four hundred four billion, two hundred forty-two million, three hundred three thousand, twenty-one".