120166545 has 32 divisors (see below), whose sum is σ = 206714880. Its totient is φ = 59417280.

The previous prime is 120166499. The next prime is 120166547. The reversal of 120166545 is 545661021.

It is not a de Polignac number, because 120166545 - 2¹⁸ = 119904401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120166547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8910 + ... + 17880.

It is an arithmetic number, because the mean of its divisors is an integer number (6459840).

Almost surely, 2^120166545 is an apocalyptic number.

120166545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120166545 is a deficient number, since it is larger than the sum of its proper divisors (86548335).

120166545 is a wasteful number, since it uses less digits than its factorization.

120166545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9045.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 120166545 is about 10962.0502188231. The cubic root of 120166545 is about 493.4704956549.

The spelling of 120166545 in words is "one hundred twenty million, one hundred sixty-six thousand, five hundred forty-five".