142906 has 4 divisors (see below), whose sum is σ = 214362. Its totient is φ = 71452.

The previous prime is 142903. The next prime is 142907. The reversal of 142906 is 609241.

142906 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99225 + 43681 = 315^2 + 209^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35725 + ... + 35728.

2¹⁴²⁹⁰⁶ is an apocalyptic number.

142906 is a deficient number, since it is larger than the sum of its proper divisors (71456).

142906 is an equidigital number, since it uses as much as digits as its factorization.

142906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71455.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 142906 is about 378.0290994090. The cubic root of 142906 is about 52.2817546190.

Subtracting from 142906 its sum of digits (22), we obtain a square (142884 = 378²).

The spelling of 142906 in words is "one hundred forty-two thousand, nine hundred six".