142405111 has 8 divisors (see below), whose sum is σ = 143766000. Its totient is φ = 141049920.

The previous prime is 142405099. The next prime is 142405127. The reversal of 142405111 is 111504241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142405111 - 2¹⁷ = 142274039 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 (142405411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61291 + ... + 63571.

It is an arithmetic number, because the mean of its divisors is an integer number (17970750).

Almost surely, 2^142405111 is an apocalyptic number.

142405111 is a deficient number, since it is larger than the sum of its proper divisors (1360889).

142405111 is a wasteful number, since it uses less digits than its factorization.

142405111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 142405111 is about 11933.3612616061. The cubic root of 142405111 is about 522.2060017412.

Adding to 142405111 its reverse (111504241), we get a palindrome (253909352).

The spelling of 142405111 in words is "one hundred forty-two million, four hundred five thousand, one hundred eleven".