120166405 has 4 divisors (see below), whose sum is σ = 144199692. Its totient is φ = 96133120.

The previous prime is 120166391. The next prime is 120166411. The reversal of 120166405 is 504661021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504661021 = 1303 ⋅387307.

It can be written as a sum of positive squares in 2 ways, for example, as 43586404 + 76580001 = 6602^2 + 8751^2 .

It is not a de Polignac number, because 120166405 - 2⁵ = 120166373 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120166405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12016636 + ... + 12016645.

It is an arithmetic number, because the mean of its divisors is an integer number (36049923).

Almost surely, 2^120166405 is an apocalyptic number.

It is an amenable number.

120166405 is a deficient number, since it is larger than the sum of its proper divisors (24033287).

120166405 is an equidigital number, since it uses as much as digits as its factorization.

120166405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24033286.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 120166405 is about 10962.0438331545. The cubic root of 120166405 is about 493.4703040156.

The spelling of 120166405 in words is "one hundred twenty million, one hundred sixty-six thousand, four hundred five".