120378555 has 48 divisors (see below), whose sum is σ = 236081664. Its totient is φ = 58358880.

The previous prime is 120378553. The next prime is 120378563. The reversal of 120378555 is 555873021.

It is not a de Polignac number, because 120378555 - 2¹ = 120378553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120378553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8862 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (4918368).

Almost surely, 2^120378555 is an apocalyptic number.

120378555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120378555 is a deficient number, since it is larger than the sum of its proper divisors (115703109).

120378555 is an equidigital number, since it uses as much as digits as its factorization.

120378555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9038 (or 9026 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 120378555 is about 10971.7161374144. The cubic root of 120378555 is about 493.7605353731.

The spelling of 120378555 in words is "one hundred twenty million, three hundred seventy-eight thousand, five hundred fifty-five".