166142135 has 8 divisors (see below), whose sum is σ = 201894720. Its totient is φ = 131230944.

The previous prime is 166142089. The next prime is 166142143. The reversal of 166142135 is 531241661.

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 not a de Polignac number, because 166142135 - 2²⁰ = 165093559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166142098 and 166142107.

It is a congruent number.

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, 209912 + ... + 210701.

It is an arithmetic number, because the mean of its divisors is an integer number (25236840).

Almost surely, 2^166142135 is an apocalyptic number.

166142135 is a deficient number, since it is larger than the sum of its proper divisors (35752585).

166142135 is an equidigital number, since it uses as much as digits as its factorization.

166142135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420697.

The product of its digits is 4320, while the sum is 29.

The square root of 166142135 is about 12889.6134542507. The cubic root of 166142135 is about 549.7432796398.

Adding to 166142135 its reverse (531241661), we get a palindrome (697383796).

The spelling of 166142135 in words is "one hundred sixty-six million, one hundred forty-two thousand, one hundred thirty-five".