142168788 has 36 divisors (see below), whose sum is σ = 371765940. Its totient is φ = 45755136.

The previous prime is 142168787. The next prime is 142168813. The reversal of 142168788 is 887861241.

It can be written as a sum of positive squares in 2 ways, for example, as 121484484 + 20684304 = 11022^2 + 4548^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142168787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67045 + ... + 69132.

Almost surely, 2^142168788 is an apocalyptic number.

142168788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

142168788 is an abundant number, since it is smaller than the sum of its proper divisors (229597152).

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

142168788 is a wasteful number, since it uses less digits than its factorization.

142168788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136216 (or 136211 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 142168788 is about 11923.4553716614. The cubic root of 142168788 is about 521.9169727462.

The spelling of 142168788 in words is "one hundred forty-two million, one hundred sixty-eight thousand, seven hundred eighty-eight".