120530421 has 24 divisors (see below), whose sum is σ = 191224800. Its totient is φ = 72549600.

The previous prime is 120530411. The next prime is 120530429. The reversal of 120530421 is 124035021.

It is not a de Polignac number, because 120530421 - 2¹⁰ = 120529397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120530394 and 120530403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120530429) 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, 10666 + ... + 18836.

It is an arithmetic number, because the mean of its divisors is an integer number (7967700).

Almost surely, 2^120530421 is an apocalyptic number.

120530421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120530421 is a deficient number, since it is larger than the sum of its proper divisors (70694379).

120530421 is a wasteful number, since it uses less digits than its factorization.

120530421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8337 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 120530421 is about 10978.6347511883. The cubic root of 120530421 is about 493.9680859799.

Adding to 120530421 its reverse (124035021), we get a palindrome (244565442).

It can be divided in two parts, 1205 and 30421, that added together give a triangular number (31626 = T₂₅₁).

The spelling of 120530421 in words is "one hundred twenty million, five hundred thirty thousand, four hundred twenty-one".