142004111 has 4 divisors (see below), whose sum is σ = 150357312. Its totient is φ = 133650912.

The previous prime is 142004089. The next prime is 142004117. The reversal of 142004111 is 111400241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111400241 = 271 ⋅411071.

It is a cyclic number.

It is not a de Polignac number, because 142004111 - 2¹⁰ = 142003087 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 (142004117) 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, 4176575 + ... + 4176608.

It is an arithmetic number, because the mean of its divisors is an integer number (37589328).

Almost surely, 2^142004111 is an apocalyptic number.

142004111 is a deficient number, since it is larger than the sum of its proper divisors (8353201).

142004111 is an equidigital number, since it uses as much as digits as its factorization.

142004111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8353200.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 142004111 is about 11916.5477802927. The cubic root of 142004111 is about 521.7153792063.

Adding to 142004111 its reverse (111400241), we get a palindrome (253404352).

The spelling of 142004111 in words is "one hundred forty-two million, four thousand, one hundred eleven".