142251223 has 4 divisors (see below), whose sum is σ = 150618960. Its totient is φ = 133883488.

The previous prime is 142251217. The next prime is 142251227. The reversal of 142251223 is 322152241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322152241 = 47 ⋅6854303.

It is a cyclic number.

It is not a de Polignac number, because 142251223 - 2⁵ = 142251191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142251194 and 142251203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142251227) 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, 4183843 + ... + 4183876.

It is an arithmetic number, because the mean of its divisors is an integer number (37654740).

Almost surely, 2^142251223 is an apocalyptic number.

142251223 is a deficient number, since it is larger than the sum of its proper divisors (8367737).

142251223 is an equidigital number, since it uses as much as digits as its factorization.

142251223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8367736.

The product of its digits is 960, while the sum is 22.

The square root of 142251223 is about 11926.9117125935. The cubic root of 142251223 is about 522.0178291841.

The spelling of 142251223 in words is "one hundred forty-two million, two hundred fifty-one thousand, two hundred twenty-three".