142636222 has 8 divisors (see below), whose sum is σ = 226539936. Its totient is φ = 67122912.

The previous prime is 142636183. The next prime is 142636223. The reversal of 142636222 is 222636241.

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 (142636223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2097558 + ... + 2097625.

It is an arithmetic number, because the mean of its divisors is an integer number (28317492).

Almost surely, 2^142636222 is an apocalyptic number.

142636222 is a deficient number, since it is larger than the sum of its proper divisors (83903714).

142636222 is a wasteful number, since it uses less digits than its factorization.

142636222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195202.

The product of its digits is 6912, while the sum is 28.

The square root of 142636222 is about 11943.0407350892. The cubic root of 142636222 is about 522.4883472291.

The spelling of 142636222 in words is "one hundred forty-two million, six hundred thirty-six thousand, two hundred twenty-two".