120162661 has 4 divisors (see below), whose sum is σ = 120321324. Its totient is φ = 120004000.

The previous prime is 120162659. The next prime is 120162667. The reversal of 120162661 is 166261021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166261021 = 4483 ⋅37087.

It can be written as a sum of positive squares in 2 ways, for example, as 11356900 + 108805761 = 3370^2 + 10431^2 .

It is a cyclic number.

It is not a de Polignac number, because 120162661 - 2¹ = 120162659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120162667) 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 3 ways as a sum of consecutive naturals, for example, 78190 + ... + 79711.

It is an arithmetic number, because the mean of its divisors is an integer number (30080331).

Almost surely, 2^120162661 is an apocalyptic number.

It is an amenable number.

120162661 is a deficient number, since it is larger than the sum of its proper divisors (158663).

120162661 is an equidigital number, since it uses as much as digits as its factorization.

120162661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158662.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 120162661 is about 10961.8730607502. The cubic root of 120162661 is about 493.4651789781.

The spelling of 120162661 in words is "one hundred twenty million, one hundred sixty-two thousand, six hundred sixty-one".