142946 has 4 divisors (see below), whose sum is σ = 214422. Its totient is φ = 71472.

The previous prime is 142939. The next prime is 142949. The reversal of 142946 is 649241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649241 = 389 ⋅1669.

It can be written as a sum of positive squares in only one way, i.e., 96721 + 46225 = 311^2 + 215^2 .

It is a nialpdrome in base 11.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 142946.

It is not an unprimeable number, because it can be changed into a prime (142949) by changing a digit.

142946 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35735 + ... + 35738.

2¹⁴²⁹⁴⁶ is an apocalyptic number.

142946 is a deficient number, since it is larger than the sum of its proper divisors (71476).

142946 is an equidigital number, since it uses as much as digits as its factorization.

142946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71475.

The product of its digits is 1728, while the sum is 26.

The square root of 142946 is about 378.0820016875. The cubic root of 142946 is about 52.2866321261.

The spelling of 142946 in words is "one hundred forty-two thousand, nine hundred forty-six".