1205161 has 4 divisors (see below), whose sum is σ = 1233232. Its totient is φ = 1177092.

The previous prime is 1205159. The next prime is 1205173. The reversal of 1205161 is 1615021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1205161 - 2¹ = 1205159 is a prime.

It is a Duffinian number.

1205161 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1205101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13971 + ... + 14056.

It is an arithmetic number, because the mean of its divisors is an integer number (308308).

2^1205161 is an apocalyptic number.

It is an amenable number.

1205161 is a deficient number, since it is larger than the sum of its proper divisors (28071).

1205161 is an equidigital number, since it uses as much as digits as its factorization.

1205161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28070.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1205161 is about 1097.7982510462. The cubic root of 1205161 is about 106.4179829499.

The spelling of 1205161 in words is "one million, two hundred five thousand, one hundred sixty-one".