142138835 has 8 divisors (see below), whose sum is σ = 170636640. Its totient is φ = 113664384.

The previous prime is 142138823. The next prime is 142138859. The reversal of 142138835 is 538831241.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142138835 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142138795 and 142138804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13211 + ... + 21419.

It is an arithmetic number, because the mean of its divisors is an integer number (21329580).

Almost surely, 2^142138835 is an apocalyptic number.

142138835 is a deficient number, since it is larger than the sum of its proper divisors (28497805).

142138835 is an equidigital number, since it uses as much as digits as its factorization.

142138835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677.

The product of its digits is 23040, while the sum is 35.

The square root of 142138835 is about 11922.1992518159. The cubic root of 142138835 is about 521.8803166059.

The spelling of 142138835 in words is "one hundred forty-two million, one hundred thirty-eight thousand, eight hundred thirty-five".