142811822 has 8 divisors (see below), whose sum is σ = 214907472. Its totient is φ = 71176000.

The previous prime is 142811813. The next prime is 142811827. The reversal of 142811822 is 228118241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142811827) 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 3 ways as a sum of consecutive naturals, for example, 114179 + ... + 115422.

It is an arithmetic number, because the mean of its divisors is an integer number (26863434).

Almost surely, 2^142811822 is an apocalyptic number.

142811822 is a deficient number, since it is larger than the sum of its proper divisors (72095650).

142811822 is a wasteful number, since it uses less digits than its factorization.

142811822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229914.

The product of its digits is 2048, while the sum is 29.

The square root of 142811822 is about 11950.3900354758. The cubic root of 142811822 is about 522.7026717707.

The spelling of 142811822 in words is "one hundred forty-two million, eight hundred eleven thousand, eight hundred twenty-two".