1143021123 has 12 divisors (see below), whose sum is σ = 1655793048. Its totient is φ = 759816000.

The previous prime is 1143021107. The next prime is 1143021149. The reversal of 1143021123 is 3211203411.

1143021123 is a `hidden beast` number, since 1 + 1 + 430 + 211 + 23 = 666.

It is not a de Polignac number, because 1143021123 - 2⁴ = 1143021107 is a prime.

It is a super-2 number, since 2×1143021123² = 2612994575248362258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1143021096 and 1143021105.

It is not an unprimeable number, because it can be changed into a prime (1143021193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179878 + ... + 186123.

It is an arithmetic number, because the mean of its divisors is an integer number (137982754).

Almost surely, 2^1143021123 is an apocalyptic number.

1143021123 is a deficient number, since it is larger than the sum of its proper divisors (512771925).

1143021123 is a wasteful number, since it uses less digits than its factorization.

1143021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366354 (or 366351 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1143021123 is about 33808.5954011698. The cubic root of 1143021123 is about 1045.5659192141.

Adding to 1143021123 its reverse (3211203411), we get a palindrome (4354224534).

The spelling of 1143021123 in words is "one billion, one hundred forty-three million, twenty-one thousand, one hundred twenty-three".