1143021401 has 8 divisors (see below), whose sum is σ = 1221570720. Its totient is φ = 1065729088.

The previous prime is 1143021331. The next prime is 1143021419. The reversal of 1143021401 is 1041203411.

It is a happy number.

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-1143021401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143021401.

It is not an unprimeable number, because it can be changed into a prime (1143021431) 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, 312371 + ... + 316008.

It is an arithmetic number, because the mean of its divisors is an integer number (152696340).

Almost surely, 2^1143021401 is an apocalyptic number.

It is an amenable number.

1143021401 is a deficient number, since it is larger than the sum of its proper divisors (78549319).

1143021401 is a wasteful number, since it uses less digits than its factorization.

1143021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628503.

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

The square root of 1143021401 is about 33808.5995125501. The cubic root of 1143021401 is about 1045.5660039799.

Adding to 1143021401 its reverse (1041203411), we get a palindrome (2184224812).

The spelling of 1143021401 in words is "one billion, one hundred forty-three million, twenty-one thousand, four hundred one".