142406 has 8 divisors (see below), whose sum is σ = 233064. Its totient is φ = 64720.

The previous prime is 142403. The next prime is 142421. The reversal of 142406 is 604241.

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

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142406.

It is not an unprimeable number, because it can be changed into a prime (142403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3215 + ... + 3258.

It is an arithmetic number, because the mean of its divisors is an integer number (29133).

2¹⁴²⁴⁰⁶ is an apocalyptic number.

142406 is a deficient number, since it is larger than the sum of its proper divisors (90658).

142406 is a wasteful number, since it uses less digits than its factorization.

142406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6486.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142406 is about 377.3671951826. The cubic root of 142406 is about 52.2207088407.

Adding to 142406 its reverse (604241), we get a palindrome (746647).

The spelling of 142406 in words is "one hundred forty-two thousand, four hundred six".