142251211 has 4 divisors (see below), whose sum is σ = 143193424. Its totient is φ = 141309000.

The previous prime is 142251209. The next prime is 142251217. The reversal of 142251211 is 112152241.

142251211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112152241 = 1987 ⋅56443.

It is a cyclic number.

It is not a de Polignac number, because 142251211 - 2¹ = 142251209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142251217) 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, 470880 + ... + 471181.

It is an arithmetic number, because the mean of its divisors is an integer number (35798356).

Almost surely, 2^142251211 is an apocalyptic number.

142251211 is a deficient number, since it is larger than the sum of its proper divisors (942213).

142251211 is an equidigital number, since it uses as much as digits as its factorization.

142251211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942212.

The product of its digits is 160, while the sum is 19.

The square root of 142251211 is about 11926.9112095295. The cubic root of 142251211 is about 522.0178145053.

The spelling of 142251211 in words is "one hundred forty-two million, two hundred fifty-one thousand, two hundred eleven".