120410721 has 12 divisors (see below), whose sum is σ = 174803200. Its totient is φ = 79869240.

The previous prime is 120410713. The next prime is 120410743. The reversal of 120410721 is 127014021.

It is not a de Polignac number, because 120410721 - 2³ = 120410713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120410694 and 120410703.

It is not an unprimeable number, because it can be changed into a prime (120410761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31825 + ... + 35406.

Almost surely, 2^120410721 is an apocalyptic number.

It is an amenable number.

120410721 is a deficient number, since it is larger than the sum of its proper divisors (54392479).

120410721 is a wasteful number, since it uses less digits than its factorization.

120410721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67436 (or 67433 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 120410721 is about 10973.1818995221. The cubic root of 120410721 is about 493.8045102239.

Adding to 120410721 its reverse (127014021), we get a palindrome (247424742).

The spelling of 120410721 in words is "one hundred twenty million, four hundred ten thousand, seven hundred twenty-one".