142210227 has 4 divisors (see below), whose sum is σ = 189613640. Its totient is φ = 94806816.

The previous prime is 142210217. The next prime is 142210241. The reversal of 142210227 is 722012241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722012241 = 3 ⋅240670747.

It is not a de Polignac number, because 142210227 - 2¹² = 142206131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142210207) 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, 23701702 + ... + 23701707.

It is an arithmetic number, because the mean of its divisors is an integer number (47403410).

Almost surely, 2^142210227 is an apocalyptic number.

142210227 is a deficient number, since it is larger than the sum of its proper divisors (47403413).

142210227 is an equidigital number, since it uses as much as digits as its factorization.

142210227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47403412.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 142210227 is about 11925.1929544138. The cubic root of 142210227 is about 521.9676768347.

Adding to 142210227 its reverse (722012241), we get a palindrome (864222468).

The spelling of 142210227 in words is "one hundred forty-two million, two hundred ten thousand, two hundred twenty-seven".