120342105 has 96 divisors (see below), whose sum is σ = 245831040. Its totient is φ = 55987200.

The previous prime is 120342097. The next prime is 120342107. The reversal of 120342105 is 501243021.

It is not a de Polignac number, because 120342105 - 2³ = 120342097 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120342107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 299905 + ... + 300305.

It is an arithmetic number, because the mean of its divisors is an integer number (2560740).

Almost surely, 2^120342105 is an apocalyptic number.

120342105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120342105 is an abundant number, since it is smaller than the sum of its proper divisors (125488935).

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

120342105 is a wasteful number, since it uses less digits than its factorization.

120342105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 120342105 is about 10970.0549223785. The cubic root of 120342105 is about 493.7106943021.

Adding to 120342105 its reverse (501243021), we get a palindrome (621585126).

It can be divided in two parts, 120 and 342105, that added together give a square (342225 = 585²).

The spelling of 120342105 in words is "one hundred twenty million, three hundred forty-two thousand, one hundred five".