1042220143 has 4 divisors (see below), whose sum is σ = 1061884728. Its totient is φ = 1022555560.

The previous prime is 1042220117. The next prime is 1042220209. The reversal of 1042220143 is 3410222401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042220143 is a prime.

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 1042220143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042220843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9832213 + ... + 9832318.

It is an arithmetic number, because the mean of its divisors is an integer number (265471182).

Almost surely, 2^1042220143 is an apocalyptic number.

1042220143 is a deficient number, since it is larger than the sum of its proper divisors (19664585).

1042220143 is an equidigital number, since it uses as much as digits as its factorization.

1042220143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19664584.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1042220143 is about 32283.4344982067. The cubic root of 1042220143 is about 1013.8798397322.

Adding to 1042220143 its reverse (3410222401), we get a palindrome (4452442544).

The spelling of 1042220143 in words is "one billion, forty-two million, two hundred twenty thousand, one hundred forty-three".