142204211 has 4 divisors (see below), whose sum is σ = 142579800. Its totient is φ = 141828624.

The previous prime is 142204207. The next prime is 142204243. The reversal of 142204211 is 112402241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142204211 - 2² = 142204207 is a prime.

It is a super-2 number, since 2×142204211² = 40444075252265042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142204211.

It is not an unprimeable number, because it can be changed into a prime (142204291) 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, 187226 + ... + 187983.

It is an arithmetic number, because the mean of its divisors is an integer number (35644950).

Almost surely, 2^142204211 is an apocalyptic number.

142204211 is a deficient number, since it is larger than the sum of its proper divisors (375589).

142204211 is an equidigital number, since it uses as much as digits as its factorization.

142204211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375588.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142204211 is about 11924.9407126409. The cubic root of 142204211 is about 521.9603163659.

Adding to 142204211 its reverse (112402241), we get a palindrome (254606452).

The spelling of 142204211 in words is "one hundred forty-two million, two hundred four thousand, two hundred eleven".