143240023 has 4 divisors (see below), whose sum is σ = 145667880. Its totient is φ = 140812168.

The previous prime is 143240003. The next prime is 143240033. The reversal of 143240023 is 320042341.

143240023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320042341 = 37 ⋅8649793.

It is a cyclic number.

It is not a de Polignac number, because 143240023 - 2⁵ = 143239991 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 (143240003) 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, 1213840 + ... + 1213957.

It is an arithmetic number, because the mean of its divisors is an integer number (36416970).

Almost surely, 2^143240023 is an apocalyptic number.

143240023 is a deficient number, since it is larger than the sum of its proper divisors (2427857).

143240023 is an equidigital number, since it uses as much as digits as its factorization.

143240023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427856.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 143240023 is about 11968.2924011740. The cubic root of 143240023 is about 523.2245671250.

Adding to 143240023 its reverse (320042341), we get a palindrome (463282364).

The spelling of 143240023 in words is "one hundred forty-three million, two hundred forty thousand, twenty-three".