142422151 has 4 divisors (see below), whose sum is σ = 145895904. Its totient is φ = 138948400.

The previous prime is 142422131. The next prime is 142422167. The reversal of 142422151 is 151224241.

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 142422151 - 2¹⁹ = 141897863 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 (142422131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736815 + ... + 1736896.

It is an arithmetic number, because the mean of its divisors is an integer number (36473976).

Almost surely, 2^142422151 is an apocalyptic number.

142422151 is a deficient number, since it is larger than the sum of its proper divisors (3473753).

142422151 is an equidigital number, since it uses as much as digits as its factorization.

142422151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3473752.

The product of its digits is 640, while the sum is 22.

The square root of 142422151 is about 11934.0752050588. The cubic root of 142422151 is about 522.2268297281.

Adding to 142422151 its reverse (151224241), we get a palindrome (293646392).

The spelling of 142422151 in words is "one hundred forty-two million, four hundred twenty-two thousand, one hundred fifty-one".