135682142 has 4 divisors (see below), whose sum is σ = 203523216. Its totient is φ = 67841070.

The previous prime is 135682139. The next prime is 135682153. The reversal of 135682142 is 241286531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241286531 = 1993 ⋅121067.

It is a junction number, because it is equal to n+sod(n) for n = 135682099 and 135682108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33920534 + ... + 33920537.

It is an arithmetic number, because the mean of its divisors is an integer number (50880804).

Almost surely, 2^135682142 is an apocalyptic number.

135682142 is a deficient number, since it is larger than the sum of its proper divisors (67841074).

135682142 is an equidigital number, since it uses as much as digits as its factorization.

135682142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67841073.

The product of its digits is 11520, while the sum is 32.

The square root of 135682142 is about 11648.2677682134. The cubic root of 135682142 is about 513.8553671598.

The spelling of 135682142 in words is "one hundred thirty-five million, six hundred eighty-two thousand, one hundred forty-two".