142622645 has 16 divisors (see below), whose sum is σ = 196534080. Its totient is φ = 98265600.

The previous prime is 142622621. The next prime is 142622657. The reversal of 142622645 is 546226241.

It is not a de Polignac number, because 142622645 - 2¹⁰ = 142621621 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 67196 + ... + 69285.

It is an arithmetic number, because the mean of its divisors is an integer number (12283380).

Almost surely, 2^142622645 is an apocalyptic number.

It is an amenable number.

142622645 is a deficient number, since it is larger than the sum of its proper divisors (53911435).

142622645 is a wasteful number, since it uses less digits than its factorization.

142622645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136516.

The product of its digits is 23040, while the sum is 32.

The square root of 142622645 is about 11942.4723152285. The cubic root of 142622645 is about 522.4717688096.

Adding to 142622645 its reverse (546226241), we get a palindrome (688848886).

The spelling of 142622645 in words is "one hundred forty-two million, six hundred twenty-two thousand, six hundred forty-five".