720121303 has 4 divisors (see below), whose sum is σ = 785586888. Its totient is φ = 654655720.

The previous prime is 720121273. The next prime is 720121333. The reversal of 720121303 is 303121027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303121027 = 11 ⋅27556457.

It is an interprime number because it is at equal distance from previous prime (720121273) and next prime (720121333).

It is a cyclic number.

It is not a de Polignac number, because 720121303 - 2⁵ = 720121271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720121333) 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, 32732776 + ... + 32732797.

It is an arithmetic number, because the mean of its divisors is an integer number (196396722).

Almost surely, 2^720121303 is an apocalyptic number.

720121303 is a deficient number, since it is larger than the sum of its proper divisors (65465585).

720121303 is a wasteful number, since it uses less digits than its factorization.

720121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65465584.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 720121303 is about 26835.0759827506. The cubic root of 720121303 is about 896.3312805443.

The spelling of 720121303 in words is "seven hundred twenty million, one hundred twenty-one thousand, three hundred three".