142012145 has 32 divisors (see below), whose sum is σ = 191725056. Its totient is φ = 100096000.

The previous prime is 142012139. The next prime is 142012181. The reversal of 142012145 is 541210241.

It is a happy number.

It is not a de Polignac number, because 142012145 - 2¹⁸ = 141750001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 353945 + ... + 354345.

It is an arithmetic number, because the mean of its divisors is an integer number (5991408).

Almost surely, 2^142012145 is an apocalyptic number.

It is an amenable number.

142012145 is a deficient number, since it is larger than the sum of its proper divisors (49712911).

142012145 is a wasteful number, since it uses less digits than its factorization.

142012145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 142012145 is about 11916.8848697971. The cubic root of 142012145 is about 521.7252178471.

Adding to 142012145 its reverse (541210241), we get a palindrome (683222386).

The spelling of 142012145 in words is "one hundred forty-two million, twelve thousand, one hundred forty-five".