120456171381 has 32 divisors (see below), whose sum is σ = 197867255040. Its totient is φ = 63474453504.

The previous prime is 120456171323. The next prime is 120456171383. The reversal of 120456171381 is 183171654021.

It is not a de Polignac number, because 120456171381 - 2⁶ = 120456171317 is a prime.

It is a super-2 number, since 2×120456171381² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120456171383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58765 + ... + 494333.

It is an arithmetic number, because the mean of its divisors is an integer number (6183351720).

Almost surely, 2^120456171381 is an apocalyptic number.

It is an amenable number.

120456171381 is a deficient number, since it is larger than the sum of its proper divisors (77411083659).

120456171381 is a wasteful number, since it uses less digits than its factorization.

120456171381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436605.

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 120456171381 in words is "one hundred twenty billion, four hundred fifty-six million, one hundred seventy-one thousand, three hundred eighty-one".