2402161 has 2 divisors, whose sum is σ = 2402162. Its totient is φ = 2402160.

The previous prime is 2402107. The next prime is 2402173. The reversal of 2402161 is 1612042.

2402161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2383936 + 18225 = 1544^2 + 135^2 .

It is a cyclic number.

It is not a de Polignac number, because 2402161 - 2¹⁹ = 1877873 is a prime.

It is not a weakly prime, because it can be changed into another prime (2402261) by changing a digit.

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 as a sum of consecutive naturals, namely, 1201080 + 1201081.

It is an arithmetic number, because the mean of its divisors is an integer number (1201081).

2^2402161 is an apocalyptic number.

It is an amenable number.

2402161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402161 is an equidigital number, since it uses as much as digits as its factorization.

2402161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2402161 is about 1549.8906413034. The cubic root of 2402161 is about 133.9267625339.

It can be divided in two parts, 240 and 2161, that added together give a 4-th power (2401 = 7⁴).

The spelling of 2402161 in words is "two million, four hundred two thousand, one hundred sixty-one".