1154121145 has 8 divisors (see below), whose sum is σ = 1388870856. Its totient is φ = 920679936.

The previous prime is 1154121139. The next prime is 1154121169. The reversal of 1154121145 is 5411214511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 187470864 + 966650281 = 13692^2 + 31091^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1154121145 - 2²¹ = 1152023993 is a prime.

It is a super-2 number, since 2×1154121145² = 2663991234672222050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 325182 + ... + 328711.

It is an arithmetic number, because the mean of its divisors is an integer number (173608857).

Almost surely, 2^1154121145 is an apocalyptic number.

It is an amenable number.

1154121145 is a deficient number, since it is larger than the sum of its proper divisors (234749711).

1154121145 is an equidigital number, since it uses as much as digits as its factorization.

1154121145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654251.

The product of its digits is 800, while the sum is 25.

The square root of 1154121145 is about 33972.3585433805. The cubic root of 1154121145 is about 1048.9395627913.

Adding to 1154121145 its reverse (5411214511), we get a palindrome (6565335656).

The spelling of 1154121145 in words is "one billion, one hundred fifty-four million, one hundred twenty-one thousand, one hundred forty-five".