142221832 has 16 divisors (see below), whose sum is σ = 269159760. Its totient is φ = 70445904.

The previous prime is 142221823. The next prime is 142221869. The reversal of 142221832 is 238122241.

142221832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 142221797 and 142221806.

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, 82218 + ... + 83929.

It is an arithmetic number, because the mean of its divisors is an integer number (16822485).

Almost surely, 2^142221832 is an apocalyptic number.

It is an amenable number.

142221832 is a deficient number, since it is larger than the sum of its proper divisors (126937928).

142221832 is a wasteful number, since it uses less digits than its factorization.

142221832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166260 (or 166256 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 142221832 is about 11925.6795194236. The cubic root of 142221832 is about 521.9818747591.

The spelling of 142221832 in words is "one hundred forty-two million, two hundred twenty-one thousand, eight hundred thirty-two".