1406161 has 2 divisors, whose sum is σ = 1406162. Its totient is φ = 1406160.

The previous prime is 1406159. The next prime is 1406173. The reversal of 1406161 is 1616041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 1936 = 1185^2 + 44^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406161 - 2¹ = 1406159 is a prime.

Together with 1406159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1406101) 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, 703080 + 703081.

It is an arithmetic number, because the mean of its divisors is an integer number (703081).

2^1406161 is an apocalyptic number.

It is an amenable number.

1406161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1406161 is an equidigital number, since it uses as much as digits as its factorization.

1406161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1406161 is about 1185.8165962745. The cubic root of 1406161 is about 112.0327550880.

The spelling of 1406161 in words is "one million, four hundred six thousand, one hundred sixty-one".