143400042 has 24 divisors (see below), whose sum is σ = 318279780. Its totient is φ = 46633920.

The previous prime is 143399957. The next prime is 143400053. The reversal of 143400042 is 240004341.

It can be written as a sum of positive squares in 2 ways, for example, as 141633801 + 1766241 = 11901^2 + 1329^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 143399988 and 143400024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96417 + ... + 97892.

Almost surely, 2^143400042 is an apocalyptic number.

143400042 is an abundant number, since it is smaller than the sum of its proper divisors (174879738).

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

143400042 is a wasteful number, since it uses less digits than its factorization.

143400042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194358 (or 194355 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 143400042 is about 11974.9756575953. The cubic root of 143400042 is about 523.4193327866.

Adding to 143400042 its reverse (240004341), we get a palindrome (383404383).

The spelling of 143400042 in words is "one hundred forty-three million, four hundred thousand, forty-two".