142122145 has 32 divisors (see below), whose sum is σ = 190439424. Its totient is φ = 100958400.

The previous prime is 142122107. The next prime is 142122161. The reversal of 142122145 is 541221241.

It is not a de Polignac number, because 142122145 - 2²⁷ = 7904417 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 744000 + ... + 744190.

It is an arithmetic number, because the mean of its divisors is an integer number (5951232).

Almost surely, 2^142122145 is an apocalyptic number.

It is an amenable number.

142122145 is a deficient number, since it is larger than the sum of its proper divisors (48317279).

142122145 is a wasteful number, since it uses less digits than its factorization.

142122145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

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

The square root of 142122145 is about 11921.4992765172. The cubic root of 142122145 is about 521.8598893398.

Adding to 142122145 its reverse (541221241), we get a palindrome (683343386).

The spelling of 142122145 in words is "one hundred forty-two million, one hundred twenty-two thousand, one hundred forty-five".