142938 has 16 divisors (see below), whose sum is σ = 317760. Its totient is φ = 47628.

The previous prime is 142907. The next prime is 142939. The reversal of 142938 is 839241.

142938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (142939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1270 + ... + 1377.

It is an arithmetic number, because the mean of its divisors is an integer number (19860).

2¹⁴²⁹³⁸ is an apocalyptic number.

142938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

142938 is an abundant number, since it is smaller than the sum of its proper divisors (174822).

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

142938 is a wasteful number, since it uses less digits than its factorization.

142938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2652 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 142938 is about 378.0714218240. The cubic root of 142938 is about 52.2856566974.

The spelling of 142938 in words is "one hundred forty-two thousand, nine hundred thirty-eight".