142230251 has 4 divisors (see below), whose sum is σ = 142975104. Its totient is φ = 141485400.

The previous prime is 142230203. The next prime is 142230259. The reversal of 142230251 is 152032241.

142230251 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: 152032241 = 17 ⋅8943073.

It is a cyclic number.

It is not a de Polignac number, because 142230251 - 2¹⁴ = 142213867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142230259) 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, 372140 + ... + 372521.

It is an arithmetic number, because the mean of its divisors is an integer number (35743776).

Almost surely, 2^142230251 is an apocalyptic number.

142230251 is a deficient number, since it is larger than the sum of its proper divisors (744853).

142230251 is an equidigital number, since it uses as much as digits as its factorization.

142230251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744852.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 142230251 is about 11926.0324919899. The cubic root of 142230251 is about 521.9921743467.

Adding to 142230251 its reverse (152032241), we get a palindrome (294262492).

The spelling of 142230251 in words is "one hundred forty-two million, two hundred thirty thousand, two hundred fifty-one".