142817860 has 24 divisors (see below), whose sum is σ = 300265560. Its totient is φ = 57060864.

The previous prime is 142817839. The next prime is 142817861. The reversal of 142817860 is 68718241.

142817860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39917124 + 102900736 = 6318^2 + 10144^2 .

It is a super-2 number, since 2×142817860² = 40793882269959200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142817861) 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, 15886 + ... + 23194.

It is an arithmetic number, because the mean of its divisors is an integer number (12511065).

Almost surely, 2^142817860 is an apocalyptic number.

142817860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142817860 is an abundant number, since it is smaller than the sum of its proper divisors (157447700).

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

142817860 is a wasteful number, since it uses less digits than its factorization.

142817860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295 (or 8293 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 142817860 is about 11950.6426605434. The cubic root of 142817860 is about 522.7100381876.

The spelling of 142817860 in words is "one hundred forty-two million, eight hundred seventeen thousand, eight hundred sixty".