142782820 has 24 divisors (see below), whose sum is σ = 300102264. Its totient is φ = 57063936.

The previous prime is 142782799. The next prime is 142782821. The reversal of 142782820 is 28287241.

It can be written as a sum of positive squares in 4 ways, for example, as 3873024 + 138909796 = 1968^2 + 11786^2 .

It is not an unprimeable number, because it can be changed into a prime (142782821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28762 + ... + 33358.

It is an arithmetic number, because the mean of its divisors is an integer number (12504261).

Almost surely, 2^142782820 is an apocalyptic number.

142782820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142782820 is an abundant number, since it is smaller than the sum of its proper divisors (157319444).

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

142782820 is a wasteful number, since it uses less digits than its factorization.

142782820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159 (or 6157 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 142782820 is about 11949.1765406659. The cubic root of 142782820 is about 522.6672861633.

The spelling of 142782820 in words is "one hundred forty-two million, seven hundred eighty-two thousand, eight hundred twenty".