142511139 has 12 divisors (see below), whose sum is σ = 207972856. Its totient is φ = 94027392.

The previous prime is 142511113. The next prime is 142511147. The reversal of 142511139 is 931115241.

It is a happy number.

142511139 is a `hidden beast` number, since 14 + 2 + 511 + 139 = 666.

It is not a de Polignac number, because 142511139 - 2⁵ = 142511107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142511939) 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 11 ways as a sum of consecutive naturals, for example, 80749 + ... + 82494.

Almost surely, 2^142511139 is an apocalyptic number.

142511139 is a deficient number, since it is larger than the sum of its proper divisors (65461717).

142511139 is a wasteful number, since it uses less digits than its factorization.

142511139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163346 (or 163343 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 142511139 is about 11937.8029385645. The cubic root of 142511139 is about 522.3355727509.

The spelling of 142511139 in words is "one hundred forty-two million, five hundred eleven thousand, one hundred thirty-nine".