1143142001 has 8 divisors (see below), whose sum is σ = 1168870824. Its totient is φ = 1117567360.

The previous prime is 1143141953. The next prime is 1143142003. The reversal of 1143142001 is 1002413411.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 635090401 + 508051600 = 25201^2 + 22540^2 .

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-1143142001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143142003) 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, 23486 + ... + 53271.

It is an arithmetic number, because the mean of its divisors is an integer number (146108853).

Almost surely, 2^1143142001 is an apocalyptic number.

It is an amenable number.

1143142001 is a deficient number, since it is larger than the sum of its proper divisors (25728823).

1143142001 is an equidigital number, since it uses as much as digits as its factorization.

1143142001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77091.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1143142001 is about 33810.3830353931. The cubic root of 1143142001 is about 1045.6027751857.

Adding to 1143142001 its reverse (1002413411), we get a palindrome (2145555412).

The spelling of 1143142001 in words is "one billion, one hundred forty-three million, one hundred forty-two thousand, one".