142181776 has 45 divisors (see below), whose sum is σ = 303918699. Its totient is φ = 64389600.

The previous prime is 142181723. The next prime is 142181777. The reversal of 142181776 is 677181241.

The square root of 142181776 is 11924.

It is a perfect power (a square), and thus also a powerful number.

142181776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142181777) 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 8 ways as a sum of consecutive naturals, for example, 524521 + ... + 524791.

Almost surely, 2^142181776 is an apocalyptic number.

142181776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

142181776 is the 11924-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142181776

142181776 is an abundant number, since it is smaller than the sum of its proper divisors (161736923).

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

142181776 is an equidigital number, since it uses as much as digits as its factorization.

142181776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572 (or 284 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The cubic root of 142181776 is about 521.9328657124.

The spelling of 142181776 in words is "one hundred forty-two million, one hundred eighty-one thousand, seven hundred seventy-six".