1241045161 has 4 divisors (see below), whose sum is σ = 1241199232. Its totient is φ = 1240891092.

The previous prime is 1241045159. The next prime is 1241045177. The reversal of 1241045161 is 1615401421.

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 1241045161 - 2¹ = 1241045159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241045131) 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, 64245 + ... + 81298.

It is an arithmetic number, because the mean of its divisors is an integer number (310299808).

Almost surely, 2^1241045161 is an apocalyptic number.

It is an amenable number.

1241045161 is a deficient number, since it is larger than the sum of its proper divisors (154071).

1241045161 is an equidigital number, since it uses as much as digits as its factorization.

1241045161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154070.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1241045161 is about 35228.4708864861. The cubic root of 1241045161 is about 1074.6388290214.

Adding to 1241045161 its reverse (1615401421), we get a palindrome (2856446582).

The spelling of 1241045161 in words is "one billion, two hundred forty-one million, forty-five thousand, one hundred sixty-one".