120401420056 has 64 divisors (see below), whose sum is σ = 235404576000. Its totient is φ = 57667438080.

The previous prime is 120401420023. The next prime is 120401420129. The reversal of 120401420056 is 650024104021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120401420056.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 43168710 + ... + 43171498.

It is an arithmetic number, because the mean of its divisors is an integer number (3678196500).

Almost surely, 2^120401420056 is an apocalyptic number.

It is an amenable number.

120401420056 is a deficient number, since it is larger than the sum of its proper divisors (115003155944).

120401420056 is a wasteful number, since it uses less digits than its factorization.

120401420056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532 (or 4528 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 120401420056 its reverse (650024104021), we get a palindrome (770425524077).

The spelling of 120401420056 in words is "one hundred twenty billion, four hundred one million, four hundred twenty thousand, fifty-six".