142322151 has 4 divisors (see below), whose sum is σ = 189762872. Its totient is φ = 94881432.

The previous prime is 142322143. The next prime is 142322153. The reversal of 142322151 is 151223241.

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

It is not a de Polignac number, because 142322151 - 2³ = 142322143 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 (142322153) 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, 23720356 + ... + 23720361.

It is an arithmetic number, because the mean of its divisors is an integer number (47440718).

Almost surely, 2^142322151 is an apocalyptic number.

142322151 is a deficient number, since it is larger than the sum of its proper divisors (47440721).

142322151 is an equidigital number, since it uses as much as digits as its factorization.

142322151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47440720.

The product of its digits is 480, while the sum is 21.

The square root of 142322151 is about 11929.8847856968. The cubic root of 142322151 is about 522.1045760153.

Adding to 142322151 its reverse (151223241), we get a palindrome (293545392).

The spelling of 142322151 in words is "one hundred forty-two million, three hundred twenty-two thousand, one hundred fifty-one".