144136142 has 4 divisors (see below), whose sum is σ = 216204216. Its totient is φ = 72068070.

The previous prime is 144136121. The next prime is 144136151. The reversal of 144136142 is 241631441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36034034 + ... + 36034037.

It is an arithmetic number, because the mean of its divisors is an integer number (54051054).

Almost surely, 2^144136142 is an apocalyptic number.

144136142 is a deficient number, since it is larger than the sum of its proper divisors (72068074).

144136142 is an equidigital number, since it uses as much as digits as its factorization.

144136142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72068073.

The product of its digits is 2304, while the sum is 26.

The square root of 144136142 is about 12005.6712432084. The cubic root of 144136142 is about 524.3134087459.

Adding to 144136142 its reverse (241631441), we get a palindrome (385767583).

The spelling of 144136142 in words is "one hundred forty-four million, one hundred thirty-six thousand, one hundred forty-two".