120135321841 has 4 divisors (see below), whose sum is σ = 123065451684. Its totient is φ = 117205192000.

The previous prime is 120135321811. The next prime is 120135321851. The reversal of 120135321841 is 148123531021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148123531021 = 1433 ⋅103366037.

It can be written as a sum of positive squares in 2 ways, for example, as 3908875441 + 116226446400 = 62521^2 + 340920^2 .

It is a cyclic number.

It is not a de Polignac number, because 120135321841 - 2¹¹ = 120135319793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120135321811) 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, 1465064860 + ... + 1465064941.

It is an arithmetic number, because the mean of its divisors is an integer number (30766362921).

Almost surely, 2^120135321841 is an apocalyptic number.

It is an amenable number.

120135321841 is a deficient number, since it is larger than the sum of its proper divisors (2930129843).

120135321841 is an equidigital number, since it uses as much as digits as its factorization.

120135321841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930129842.

The product of its (nonzero) digits is 5760, while the sum is 31.

Adding to 120135321841 its reverse (148123531021), we get a palindrome (268258852862).

The spelling of 120135321841 in words is "one hundred twenty billion, one hundred thirty-five million, three hundred twenty-one thousand, eight hundred forty-one".