143243420 has 12 divisors (see below), whose sum is σ = 300811224. Its totient is φ = 57297360.

The previous prime is 143243389. The next prime is 143243459. The reversal of 143243420 is 24342341.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581066 + ... + 3581105.

It is an arithmetic number, because the mean of its divisors is an integer number (25067602).

Almost surely, 2^143243420 is an apocalyptic number.

143243420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143243420 is an abundant number, since it is smaller than the sum of its proper divisors (157567804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143243420 is a wasteful number, since it uses less digits than its factorization.

143243420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162180 (or 7162178 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 143243420 is about 11968.4343169857. The cubic root of 143243420 is about 523.2287032590.

Adding to 143243420 its reverse (24342341), we get a palindrome (167585761).

The spelling of 143243420 in words is "one hundred forty-three million, two hundred forty-three thousand, four hundred twenty".