142135851 has 16 divisors (see below), whose sum is σ = 222647040. Its totient is φ = 79516320.

The previous prime is 142135843. The next prime is 142135853. The reversal of 142135851 is 158531241.

It is not a de Polignac number, because 142135851 - 2³ = 142135843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142135853) 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 15 ways as a sum of consecutive naturals, for example, 165231 + ... + 166088.

It is an arithmetic number, because the mean of its divisors is an integer number (13915440).

Almost surely, 2^142135851 is an apocalyptic number.

142135851 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142135851 is a deficient number, since it is larger than the sum of its proper divisors (80511189).

142135851 is a wasteful number, since it uses less digits than its factorization.

142135851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331346.

The product of its digits is 4800, while the sum is 30.

The square root of 142135851 is about 11922.0741064632. The cubic root of 142135851 is about 521.8766645387.

The spelling of 142135851 in words is "one hundred forty-two million, one hundred thirty-five thousand, eight hundred fifty-one".