120003534721 has 24 divisors (see below), whose sum is σ = 145345150440. Its totient is φ = 98706182400.

The previous prime is 120003534719. The next prime is 120003534737. The reversal of 120003534721 is 127435300021.

It can be written as a sum of positive squares in 4 ways, for example, as 812877121 + 119190657600 = 28511^2 + 345240^2 .

It is not a de Polignac number, because 120003534721 - 2¹ = 120003534719 is a prime.

It is a super-3 number, since 3×120003534721³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120003534721.

It is not an unprimeable number, because it can be changed into a prime (120003534121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 367066 + ... + 612163.

It is an arithmetic number, because the mean of its divisors is an integer number (6056047935).

Almost surely, 2^120003534721 is an apocalyptic number.

It is an amenable number.

120003534721 is a deficient number, since it is larger than the sum of its proper divisors (25341615719).

120003534721 is an equidigital number, since it uses as much as digits as its factorization.

120003534721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979345 (or 979338 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

Adding to 120003534721 its reverse (127435300021), we get a palindrome (247438834742).

The spelling of 120003534721 in words is "one hundred twenty billion, three million, five hundred thirty-four thousand, seven hundred twenty-one".