1143152021 has 8 divisors (see below), whose sum is σ = 1249750944. Its totient is φ = 1036999120.

The previous prime is 1143152009. The next prime is 1143152027. The reversal of 1143152021 is 1202513411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1143152021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1143151984 and 1143152002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143152027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106130 + ... + 116403.

It is an arithmetic number, because the mean of its divisors is an integer number (156218868).

Almost surely, 2^1143152021 is an apocalyptic number.

1143152021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1143152021 is a deficient number, since it is larger than the sum of its proper divisors (106598923).

1143152021 is a wasteful number, since it uses less digits than its factorization.

1143152021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223011.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1143152021 is about 33810.5312144012. The cubic root of 1143152021 is about 1045.6058301895.

Adding to 1143152021 its reverse (1202513411), we get a palindrome (2345665432).

The spelling of 1143152021 in words is "one billion, one hundred forty-three million, one hundred fifty-two thousand, twenty-one".