142440142 has 16 divisors (see below), whose sum is σ = 232333920. Its totient is φ = 65102112.

The previous prime is 142440119. The next prime is 142440143. The reversal of 142440142 is 241044241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142440143) 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 7 ways as a sum of consecutive naturals, for example, 23917 + ... + 29272.

It is an arithmetic number, because the mean of its divisors is an integer number (14520870).

Almost surely, 2^142440142 is an apocalyptic number.

142440142 is a deficient number, since it is larger than the sum of its proper divisors (89893778).

142440142 is a wasteful number, since it uses less digits than its factorization.

142440142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53307.

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 142440142 is about 11934.8289472451. The cubic root of 142440142 is about 522.2488183192.

Adding to 142440142 its reverse (241044241), we get a palindrome (383484383).

The spelling of 142440142 in words is "one hundred forty-two million, four hundred forty thousand, one hundred forty-two".