120185838 has 12 divisors (see below), whose sum is σ = 260402688. Its totient is φ = 40061940.

The previous prime is 120185837. The next prime is 120185861. The reversal of 120185838 is 838581021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120185837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3338478 + ... + 3338513.

It is an arithmetic number, because the mean of its divisors is an integer number (21700224).

Almost surely, 2^120185838 is an apocalyptic number.

120185838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

120185838 is an abundant number, since it is smaller than the sum of its proper divisors (140216850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120185838 is a wasteful number, since it uses less digits than its factorization.

120185838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6676999 (or 6676996 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 120185838 is about 10962.9301740000. The cubic root of 120185838 is about 493.4969034953.

The spelling of 120185838 in words is "one hundred twenty million, one hundred eighty-five thousand, eight hundred thirty-eight".