120651885 has 24 divisors (see below), whose sum is σ = 210299544. Its totient is φ = 63987840.

The previous prime is 120651863. The next prime is 120651887. The reversal of 120651885 is 588156021.

It can be written as a sum of positive squares in 4 ways, for example, as 1798281 + 118853604 = 1341^2 + 10902^2 .

It is not a de Polignac number, because 120651885 - 2⁶ = 120651821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120651887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 739 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (8762481).

Almost surely, 2^120651885 is an apocalyptic number.

120651885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120651885 is a deficient number, since it is larger than the sum of its proper divisors (89647659).

120651885 is a wasteful number, since it uses less digits than its factorization.

120651885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15005 (or 15002 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 120651885 is about 10984.1651935866. The cubic root of 120651885 is about 494.1339616587.

The spelling of 120651885 in words is "one hundred twenty million, six hundred fifty-one thousand, eight hundred eighty-five".