1234020143 has 4 divisors (see below), whose sum is σ = 1234613520. Its totient is φ = 1233426768.

The previous prime is 1234020133. The next prime is 1234020187. The reversal of 1234020143 is 3410204321.

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

It is a cyclic number.

It is not a de Polignac number, because 1234020143 - 2⁶ = 1234020079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234020103) 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, 293558 + ... + 297731.

It is an arithmetic number, because the mean of its divisors is an integer number (308653380).

Almost surely, 2^1234020143 is an apocalyptic number.

1234020143 is a deficient number, since it is larger than the sum of its proper divisors (593377).

1234020143 is an equidigital number, since it uses as much as digits as its factorization.

1234020143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593376.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1234020143 is about 35128.6228451956. The cubic root of 1234020143 is about 1072.6073029967.

Adding to 1234020143 its reverse (3410204321), we get a palindrome (4644224464).

The spelling of 1234020143 in words is "one billion, two hundred thirty-four million, twenty thousand, one hundred forty-three".