142974 has 36 divisors (see below), whose sum is σ = 342576. Its totient is φ = 43056.

The previous prime is 142973. The next prime is 142979. The reversal of 142974 is 479241.

It is a happy number.

142974 is nontrivially palindromic in base 12.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a plaindrome in base 7.

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 142974.

It is not an unprimeable number, because it can be changed into a prime (142973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3019 + ... + 3065.

It is an arithmetic number, because the mean of its divisors is an integer number (9516).

2¹⁴²⁹⁷⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171288).

142974 is an abundant number, since it is smaller than the sum of its proper divisors (199602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142974 is a wasteful number, since it uses less digits than its factorization.

142974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 65 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 142974 is about 378.1190288785. The cubic root of 142974 is about 52.2900458397.

The spelling of 142974 in words is "one hundred forty-two thousand, nine hundred seventy-four".