142133155 has 4 divisors (see below), whose sum is σ = 170559792. Its totient is φ = 113706520.

The previous prime is 142133153. The next prime is 142133179. The reversal of 142133155 is 551331241.

It is a happy number.

142133155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142133155 - 2¹ = 142133153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142133153) 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, 14213311 + ... + 14213320.

It is an arithmetic number, because the mean of its divisors is an integer number (42639948).

Almost surely, 2^142133155 is an apocalyptic number.

142133155 is a deficient number, since it is larger than the sum of its proper divisors (28426637).

142133155 is an equidigital number, since it uses as much as digits as its factorization.

142133155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28426636.

The product of its digits is 1800, while the sum is 25.

The square root of 142133155 is about 11921.9610383527. The cubic root of 142133155 is about 521.8733649058.

Adding to 142133155 its reverse (551331241), we get a palindrome (693464396).

The spelling of 142133155 in words is "one hundred forty-two million, one hundred thirty-three thousand, one hundred fifty-five".