142241623 has 4 divisors (see below), whose sum is σ = 142671688. Its totient is φ = 141811560.

The previous prime is 142241597. The next prime is 142241629. The reversal of 142241623 is 326142241.

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: 326142241 = 191 ⋅1707551.

It is a cyclic number.

It is not a de Polignac number, because 142241623 - 2⁹ = 142241111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142241629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214536 + ... + 215197.

It is an arithmetic number, because the mean of its divisors is an integer number (35667922).

Almost surely, 2^142241623 is an apocalyptic number.

142241623 is a deficient number, since it is larger than the sum of its proper divisors (430065).

142241623 is an equidigital number, since it uses as much as digits as its factorization.

142241623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430064.

The product of its digits is 2304, while the sum is 25.

The square root of 142241623 is about 11926.5092545975. The cubic root of 142241623 is about 522.0060859133.

Adding to 142241623 its reverse (326142241), we get a palindrome (468383864).

The spelling of 142241623 in words is "one hundred forty-two million, two hundred forty-one thousand, six hundred twenty-three".