1143251121 has 8 divisors (see below), whose sum is σ = 1524500640. Its totient is φ = 762084512.

The previous prime is 1143251117. The next prime is 1143251129. The reversal of 1143251121 is 1211523411.

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 1143251121 - 2² = 1143251117 is a prime.

It is a super-3 number, since 3×1143251121³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1143251129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27445 + ... + 55133.

It is an arithmetic number, because the mean of its divisors is an integer number (190562580).

Almost surely, 2^1143251121 is an apocalyptic number.

It is an amenable number.

1143251121 is a deficient number, since it is larger than the sum of its proper divisors (381249519).

1143251121 is a wasteful number, since it uses less digits than its factorization.

1143251121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41455.

The product of its digits is 240, while the sum is 21.

The square root of 1143251121 is about 33811.9967023540. The cubic root of 1143251121 is about 1045.6360438857.

Adding to 1143251121 its reverse (1211523411), we get a palindrome (2354774532).

The spelling of 1143251121 in words is "one billion, one hundred forty-three million, two hundred fifty-one thousand, one hundred twenty-one".