120556545 has 16 divisors (see below), whose sum is σ = 198104640. Its totient is φ = 62558784.

The previous prime is 120556543. The next prime is 120556573. The reversal of 120556545 is 545655021.

It is not a de Polignac number, because 120556545 - 2¹ = 120556543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120556543) 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, 108055 + ... + 109164.

It is an arithmetic number, because the mean of its divisors is an integer number (12381540).

Almost surely, 2^120556545 is an apocalyptic number.

120556545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120556545 is a deficient number, since it is larger than the sum of its proper divisors (77548095).

120556545 is a wasteful number, since it uses less digits than its factorization.

120556545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217264.

The product of its (nonzero) digits is 30000, while the sum is 33.

The square root of 120556545 is about 10979.8244521486. The cubic root of 120556545 is about 494.0037712727.

The spelling of 120556545 in words is "one hundred twenty million, five hundred fifty-six thousand, five hundred forty-five".