142206818 has 8 divisors (see below), whose sum is σ = 229718748. Its totient is φ = 65633904.

The previous prime is 142206809. The next prime is 142206821. The reversal of 142206818 is 818602241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137992009 + 4214809 = 11747^2 + 2053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734721 + ... + 2734772.

Almost surely, 2^142206818 is an apocalyptic number.

142206818 is a deficient number, since it is larger than the sum of its proper divisors (87511930).

142206818 is a wasteful number, since it uses less digits than its factorization.

142206818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469508.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 142206818 is about 11925.0500208595. The cubic root of 142206818 is about 521.9635060094.

The spelling of 142206818 in words is "one hundred forty-two million, two hundred six thousand, eight hundred eighteen".