142443135 has 24 divisors (see below), whose sum is σ = 252158400. Its totient is φ = 74352192.

The previous prime is 142443131. The next prime is 142443137. The reversal of 142443135 is 531344241.

It is a happy number.

It is not a de Polignac number, because 142443135 - 2² = 142443131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142443099 and 142443108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142443131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31560 + ... + 35789.

It is an arithmetic number, because the mean of its divisors is an integer number (10506600).

Almost surely, 2^142443135 is an apocalyptic number.

142443135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142443135 is a deficient number, since it is larger than the sum of its proper divisors (109715265).

142443135 is a wasteful number, since it uses less digits than its factorization.

142443135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67407 (or 67404 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 142443135 is about 11934.9543358992. The cubic root of 142443135 is about 522.2524761826.

Adding to 142443135 its reverse (531344241), we get a palindrome (673787376).

The spelling of 142443135 in words is "one hundred forty-two million, four hundred forty-three thousand, one hundred thirty-five".