120135451243 has 8 divisors (see below), whose sum is σ = 124355149200. Its totient is φ = 115920893088.

The previous prime is 120135451211. The next prime is 120135451283. The reversal of 120135451243 is 342154531021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120135451243 - 2⁵ = 120135451211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120135451283) 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 7 ways as a sum of consecutive naturals, for example, 1237353 + ... + 1330906.

It is an arithmetic number, because the mean of its divisors is an integer number (15544393650).

Almost surely, 2^120135451243 is an apocalyptic number.

120135451243 is a deficient number, since it is larger than the sum of its proper divisors (4219697957).

120135451243 is a wasteful number, since it uses less digits than its factorization.

120135451243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569901.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 120135451243 its reverse (342154531021), we get a palindrome (462289982264).

The spelling of 120135451243 in words is "one hundred twenty billion, one hundred thirty-five million, four hundred fifty-one thousand, two hundred forty-three".