1145144143 has 16 divisors (see below), whose sum is σ = 1373976576. Its totient is φ = 940508640.

The previous prime is 1145144131. The next prime is 1145144149. The reversal of 1145144143 is 3414415411.

It is a cyclic number.

It is not a de Polignac number, because 1145144143 - 2²¹ = 1143046991 is a prime.

It is a super-2 number, since 2×1145144143² = 2622710216494408898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145144149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78471 + ... + 91912.

It is an arithmetic number, because the mean of its divisors is an integer number (85873536).

Almost surely, 2^1145144143 is an apocalyptic number.

1145144143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1145144143 is a deficient number, since it is larger than the sum of its proper divisors (228832433).

1145144143 is a wasteful number, since it uses less digits than its factorization.

1145144143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170454.

The product of its digits is 3840, while the sum is 28.

The square root of 1145144143 is about 33839.9784722154. The cubic root of 1145144143 is about 1046.2128551927.

Adding to 1145144143 its reverse (3414415411), we get a palindrome (4559559554).

It can be divided in two parts, 11 and 45144143, that added together give a palindrome (45144154).

The spelling of 1145144143 in words is "one billion, one hundred forty-five million, one hundred forty-four thousand, one hundred forty-three".