1144242155 has 8 divisors (see below), whose sum is σ = 1569246432. Its totient is φ = 784623168.

The previous prime is 1144242139. The next prime is 1144242179. The reversal of 1144242155 is 5512424411.

It is a happy number.

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

It is not a de Polignac number, because 1144242155 - 2⁴ = 1144242139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16346282 + ... + 16346351.

It is an arithmetic number, because the mean of its divisors is an integer number (196155804).

Almost surely, 2^1144242155 is an apocalyptic number.

1144242155 is a deficient number, since it is larger than the sum of its proper divisors (425004277).

1144242155 is an equidigital number, since it uses as much as digits as its factorization.

1144242155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32692645.

The product of its digits is 6400, while the sum is 29.

The square root of 1144242155 is about 33826.6485924929. The cubic root of 1144242155 is about 1045.9380952217.

Adding to 1144242155 its reverse (5512424411), we get a palindrome (6656666566).

The spelling of 1144242155 in words is "one billion, one hundred forty-four million, two hundred forty-two thousand, one hundred fifty-five".