120421424403 has 24 divisors (see below), whose sum is σ = 198812729856. Its totient is φ = 68804694000.

The previous prime is 120421424393. The next prime is 120421424443. The reversal of 120421424403 is 304424124021.

120421424403 is a `hidden beast` number, since 1 + 2 + 0 + 4 + 214 + 2 + 440 + 3 = 666.

It is not a de Polignac number, because 120421424403 - 2¹⁰ = 120421423379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120421424443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 501648 + ... + 701778.

It is an arithmetic number, because the mean of its divisors is an integer number (8283863744).

Almost surely, 2^120421424403 is an apocalyptic number.

120421424403 is a deficient number, since it is larger than the sum of its proper divisors (78391305453).

120421424403 is a wasteful number, since it uses less digits than its factorization.

120421424403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209695 (or 209692 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 120421424403 its reverse (304424124021), we get a palindrome (424845548424).

The spelling of 120421424403 in words is "one hundred twenty billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred three".