143131420 has 12 divisors (see below), whose sum is σ = 300576024. Its totient is φ = 57252560.

The previous prime is 143131411. The next prime is 143131421. The reversal of 143131420 is 24131341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143131421) 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, 3578266 + ... + 3578305.

It is an arithmetic number, because the mean of its divisors is an integer number (25048002).

Almost surely, 2^143131420 is an apocalyptic number.

143131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143131420 is an abundant number, since it is smaller than the sum of its proper divisors (157444604).

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

143131420 is a wasteful number, since it uses less digits than its factorization.

143131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156580 (or 7156578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 143131420 is about 11963.7544274362. The cubic root of 143131420 is about 523.0922993328.

Adding to 143131420 its reverse (24131341), we get a palindrome (167262761).

The spelling of 143131420 in words is "one hundred forty-three million, one hundred thirty-one thousand, four hundred twenty".