120306885 has 16 divisors (see below), whose sum is σ = 192945984. Its totient is φ = 64012032.

The previous prime is 120306883. The next prime is 120306937. The reversal of 120306885 is 588603021.

It is a happy number.

It is not a de Polignac number, because 120306885 - 2¹ = 120306883 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120306881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2767 + ... + 15756.

It is an arithmetic number, because the mean of its divisors is an integer number (12059124).

Almost surely, 2^120306885 is an apocalyptic number.

120306885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120306885 is a deficient number, since it is larger than the sum of its proper divisors (72639099).

120306885 is a wasteful number, since it uses less digits than its factorization.

120306885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18964.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 120306885 is about 10968.4495257990. The cubic root of 120306885 is about 493.6625255494.

It can be divided in two parts, 12030 and 6885, that added together give a triangular number (18915 = T₁₉₄).

The spelling of 120306885 in words is "one hundred twenty million, three hundred six thousand, eight hundred eighty-five".