142178816 has 80 divisors (see below), whose sum is σ = 313995528. Its totient is φ = 63897600.

The previous prime is 142178809. The next prime is 142178819. The reversal of 142178816 is 618871241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44089600 + 98089216 = 6640^2 + 9904^2 .

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 142178816.

It is not an unprimeable number, because it can be changed into a prime (142178819) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 272636 + ... + 273156.

Almost surely, 2^142178816 is an apocalyptic number.

142178816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142178816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156997764).

142178816 is an abundant number, since it is smaller than the sum of its proper divisors (171816712).

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

142178816 is an equidigital number, since it uses as much as digits as its factorization.

142178816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 577 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The square root of 142178816 is about 11923.8758799310. The cubic root of 142178816 is about 521.9292437480.

The spelling of 142178816 in words is "one hundred forty-two million, one hundred seventy-eight thousand, eight hundred sixteen".