142424155 has 4 divisors (see below), whose sum is σ = 170908992. Its totient is φ = 113939320.

The previous prime is 142424141. The next prime is 142424159. The reversal of 142424155 is 551424241.

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

It is not a de Polignac number, because 142424155 - 2⁹ = 142423643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142424159) 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, 14242411 + ... + 14242420.

It is an arithmetic number, because the mean of its divisors is an integer number (42727248).

Almost surely, 2^142424155 is an apocalyptic number.

142424155 is a deficient number, since it is larger than the sum of its proper divisors (28484837).

142424155 is an equidigital number, since it uses as much as digits as its factorization.

142424155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28484836.

The product of its digits is 6400, while the sum is 28.

The square root of 142424155 is about 11934.1591660242. The cubic root of 142424155 is about 522.2292791076.

Adding to 142424155 its reverse (551424241), we get a palindrome (693848396).

The spelling of 142424155 in words is "one hundred forty-two million, four hundred twenty-four thousand, one hundred fifty-five".