142251 has 4 divisors (see below), whose sum is σ = 189672. Its totient is φ = 94832.

The previous prime is 142237. The next prime is 142271. The reversal of 142251 is 152241.

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 142251 - 2⁷ = 142123 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 142251.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142251.

It is not an unprimeable number, because it can be changed into a prime (142211) 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, 23706 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (47418).

2¹⁴²²⁵¹ is an apocalyptic number.

142251 is a deficient number, since it is larger than the sum of its proper divisors (47421).

142251 is an equidigital number, since it uses as much as digits as its factorization.

142251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47420.

The product of its digits is 80, while the sum is 15.

The square root of 142251 is about 377.1617690064. The cubic root of 142251 is about 52.2017556404.

Adding to 142251 its reverse (152241), we get a palindrome (294492).

It can be divided in two parts, 142 and 251, that added together give a palindrome (393).

The spelling of 142251 in words is "one hundred forty-two thousand, two hundred fifty-one".