143140423 has 4 divisors (see below), whose sum is σ = 147757888. Its totient is φ = 138522960.

The previous prime is 143140409. The next prime is 143140447. The reversal of 143140423 is 324041341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324041341 = 13 ⋅24926257.

It is a cyclic number.

It is not a de Polignac number, because 143140423 - 2¹⁷ = 143009351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143140394 and 143140403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143140463) 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, 2308686 + ... + 2308747.

It is an arithmetic number, because the mean of its divisors is an integer number (36939472).

Almost surely, 2^143140423 is an apocalyptic number.

143140423 is a deficient number, since it is larger than the sum of its proper divisors (4617465).

143140423 is an equidigital number, since it uses as much as digits as its factorization.

143140423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4617464.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 143140423 is about 11964.1306830041. The cubic root of 143140423 is about 523.1032666458.

Adding to 143140423 its reverse (324041341), we get a palindrome (467181764).

The spelling of 143140423 in words is "one hundred forty-three million, one hundred forty thousand, four hundred twenty-three".