120421740531856 has 45 divisors (see below), whose sum is σ = 235486640391051. Its totient is φ = 59656106644992.

The previous prime is 120421740531823. The next prime is 120421740531923. The reversal of 120421740531856 is 658135047124021.

The square root of 120421740531856 is 10973684.

It is a perfect power (a square), and thus also a powerful number.

120421740531856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 575297978256 + 119846442553600 = 758484^2 + 10947440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4784513640 + ... + 4784538808.

Almost surely, 2^{120421740531856} is an apocalyptic number.

120421740531856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

120421740531856 is the 10973684-th square number.

It is an amenable number.

120421740531856 is a deficient number, since it is larger than the sum of its proper divisors (115064899859195).

120421740531856 is an frugal number, since it uses more digits than its factorization.

120421740531856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50564 (or 25280 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

Adding to 120421740531856 its reverse (658135047124021), we get a palindrome (778556787655877).

The spelling of 120421740531856 in words is "one hundred twenty trillion, four hundred twenty-one billion, seven hundred forty million, five hundred thirty-one thousand, eight hundred fifty-six".