142442011 has 4 divisors (see below), whose sum is σ = 143158000. Its totient is φ = 141726024.

The previous prime is 142441973. The next prime is 142442023. The reversal of 142442011 is 110244241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110244241 = 6703 ⋅16447.

It is a cyclic number.

It is not a de Polignac number, because 142442011 - 2¹¹ = 142439963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142442011.

It is not an unprimeable number, because it can be changed into a prime (142442071) 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, 357696 + ... + 358093.

It is an arithmetic number, because the mean of its divisors is an integer number (35789500).

Almost surely, 2^142442011 is an apocalyptic number.

142442011 is a deficient number, since it is larger than the sum of its proper divisors (715989).

142442011 is an equidigital number, since it uses as much as digits as its factorization.

142442011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715988.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 142442011 is about 11934.9072472307. The cubic root of 142442011 is about 522.2511025039.

Adding to 142442011 its reverse (110244241), we get a palindrome (252686252).

The spelling of 142442011 in words is "one hundred forty-two million, four hundred forty-two thousand, eleven".