142424111 has 4 divisors (see below), whose sum is σ = 144549912. Its totient is φ = 140298312.

The previous prime is 142424089. The next prime is 142424131. The reversal of 142424111 is 111424241.

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

It is a cyclic number.

It is not a de Polignac number, because 142424111 - 2¹⁰ = 142423087 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 (142424131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1062800 + ... + 1062933.

It is an arithmetic number, because the mean of its divisors is an integer number (36137478).

Almost surely, 2^142424111 is an apocalyptic number.

142424111 is a deficient number, since it is larger than the sum of its proper divisors (2125801).

142424111 is an equidigital number, since it uses as much as digits as its factorization.

142424111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2125800.

The product of its digits is 256, while the sum is 20.

The square root of 142424111 is about 11934.1573225762. The cubic root of 142424111 is about 522.2292253290.

Adding to 142424111 its reverse (111424241), we get a palindrome (253848352).

It can be divided in two parts, 1424241 and 11, that multiplied together give a palindrome (15666651).

The spelling of 142424111 in words is "one hundred forty-two million, four hundred twenty-four thousand, one hundred eleven".