142140226 has 8 divisors (see below), whose sum is σ = 214622784. Its totient is φ = 70599300.

The previous prime is 142140221. The next prime is 142140227. The reversal of 142140226 is 622041241.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 142140197 and 142140206.

It is not an unprimeable number, because it can be changed into a prime (142140221) 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, 235030 + ... + 235633.

It is an arithmetic number, because the mean of its divisors is an integer number (26827848).

Almost surely, 2^142140226 is an apocalyptic number.

142140226 is a deficient number, since it is larger than the sum of its proper divisors (72482558).

142140226 is a wasteful number, since it uses less digits than its factorization.

142140226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470816.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 142140226 is about 11922.2575882255. The cubic root of 142140226 is about 521.8820190099.

Adding to 142140226 its reverse (622041241), we get a palindrome (764181467).

The spelling of 142140226 in words is "one hundred forty-two million, one hundred forty thousand, two hundred twenty-six".