1155245122 has 4 divisors (see below), whose sum is σ = 1732867686. Its totient is φ = 577622560.

The previous prime is 1155245089. The next prime is 1155245123. The reversal of 1155245122 is 2215425511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 886907961 + 268337161 = 29781^2 + 16381^2 .

It is not an unprimeable number, because it can be changed into a prime (1155245123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288811279 + ... + 288811282.

Almost surely, 2^1155245122 is an apocalyptic number.

1155245122 is a deficient number, since it is larger than the sum of its proper divisors (577622564).

1155245122 is an equidigital number, since it uses as much as digits as its factorization.

1155245122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577622563.

The product of its digits is 4000, while the sum is 28.

The square root of 1155245122 is about 33988.8970400630. The cubic root of 1155245122 is about 1049.2799665189.

The spelling of 1155245122 in words is "one billion, one hundred fifty-five million, two hundred forty-five thousand, one hundred twenty-two".