1144122455 has 16 divisors (see below), whose sum is σ = 1584321024. Its totient is φ = 776921760.

The previous prime is 1144122443. The next prime is 1144122461. The reversal of 1144122455 is 5542214411.

It is a happy number.

It is not a de Polignac number, because 1144122455 - 2⁴ = 1144122439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155081 + ... + 162290.

It is an arithmetic number, because the mean of its divisors is an integer number (99020064).

Almost surely, 2^1144122455 is an apocalyptic number.

1144122455 is a deficient number, since it is larger than the sum of its proper divisors (440198569).

1144122455 is a wasteful number, since it uses less digits than its factorization.

1144122455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317486.

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

The square root of 1144122455 is about 33824.8792311222. The cubic root of 1144122455 is about 1045.9016218361.

Adding to 1144122455 its reverse (5542214411), we get a palindrome (6686336866).

The spelling of 1144122455 in words is "one billion, one hundred forty-four million, one hundred twenty-two thousand, four hundred fifty-five".