1023421143 has 4 divisors (see below), whose sum is σ = 1364561528. Its totient is φ = 682280760.

The previous prime is 1023421141. The next prime is 1023421151. The reversal of 1023421143 is 3411243201.

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

It is not a de Polignac number, because 1023421143 - 2¹ = 1023421141 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 (1023421141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170570188 + ... + 170570193.

It is an arithmetic number, because the mean of its divisors is an integer number (341140382).

Almost surely, 2^1023421143 is an apocalyptic number.

1023421143 is a deficient number, since it is larger than the sum of its proper divisors (341140385).

1023421143 is an equidigital number, since it uses as much as digits as its factorization.

1023421143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341140384.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1023421143 is about 31990.9540808023. The cubic root of 1023421143 is about 1007.7468785651.

Adding to 1023421143 its reverse (3411243201), we get a palindrome (4434664344).

The spelling of 1023421143 in words is "one billion, twenty-three million, four hundred twenty-one thousand, one hundred forty-three".