1161121262 has 8 divisors (see below), whose sum is σ = 1990493616. Its totient is φ = 497623392.

The previous prime is 1161121261. The next prime is 1161121277. The reversal of 1161121262 is 2621211611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161121261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41468603 + ... + 41468630.

It is an arithmetic number, because the mean of its divisors is an integer number (248811702).

Almost surely, 2^1161121262 is an apocalyptic number.

1161121262 is a deficient number, since it is larger than the sum of its proper divisors (829372354).

1161121262 is an equidigital number, since it uses as much as digits as its factorization.

1161121262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82937242.

The product of its digits is 288, while the sum is 23.

The square root of 1161121262 is about 34075.2294489707. The cubic root of 1161121262 is about 1051.0560084921.

Adding to 1161121262 its reverse (2621211611), we get a palindrome (3782332873).

The spelling of 1161121262 in words is "one billion, one hundred sixty-one million, one hundred twenty-one thousand, two hundred sixty-two".