120300553 has 4 divisors (see below), whose sum is σ = 124181248. Its totient is φ = 116419860.

The previous prime is 120300539. The next prime is 120300559. The reversal of 120300553 is 355003021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355003021 = 1327 ⋅267523.

It is a cyclic number.

It is not a de Polignac number, because 120300553 - 2²¹ = 118203401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120300553.

It is not an unprimeable number, because it can be changed into a prime (120300559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940301 + ... + 1940362.

It is an arithmetic number, because the mean of its divisors is an integer number (31045312).

Almost surely, 2^120300553 is an apocalyptic number.

It is an amenable number.

120300553 is a deficient number, since it is larger than the sum of its proper divisors (3880695).

120300553 is an equidigital number, since it uses as much as digits as its factorization.

120300553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3880694.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 120300553 is about 10968.1608759172. The cubic root of 120300553 is about 493.6538645711.

Adding to 120300553 its reverse (355003021), we get a palindrome (475303574).

The spelling of 120300553 in words is "one hundred twenty million, three hundred thousand, five hundred fifty-three".