143420005 has 4 divisors (see below), whose sum is σ = 172104012. Its totient is φ = 114736000.

The previous prime is 143420003. The next prime is 143420023. The reversal of 143420005 is 500024341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500024341 = 9629 ⋅51929.

It can be written as a sum of positive squares in 2 ways, for example, as 16924996 + 126495009 = 4114^2 + 11247^2 .

It is not a de Polignac number, because 143420005 - 2¹ = 143420003 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 (143420003) 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, 14341996 + ... + 14342005.

It is an arithmetic number, because the mean of its divisors is an integer number (43026003).

Almost surely, 2^143420005 is an apocalyptic number.

It is an amenable number.

143420005 is a deficient number, since it is larger than the sum of its proper divisors (28684007).

143420005 is an equidigital number, since it uses as much as digits as its factorization.

143420005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28684006.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 143420005 is about 11975.8091584661. The cubic root of 143420005 is about 523.4436204022.

Adding to 143420005 its reverse (500024341), we get a palindrome (643444346).

The spelling of 143420005 in words is "one hundred forty-three million, four hundred twenty thousand, five".