142290 has 64 divisors (see below), whose sum is σ = 414720. Its totient is φ = 34560.

The previous prime is 142271. The next prime is 142297. The reversal of 142290 is 92241.

142290 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 (18).

It is not an unprimeable number, because it can be changed into a prime (142297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4575 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2¹⁴²²⁹⁰ is an apocalyptic number.

142290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207360).

142290 is an abundant number, since it is smaller than the sum of its proper divisors (272430).

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

142290 is a wasteful number, since it uses less digits than its factorization.

142290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 142290 is about 377.2134674160. The cubic root of 142290 is about 52.2065258059.

It can be divided in two parts, 14 and 2290, that added together give a square (2304 = 48²).

The spelling of 142290 in words is "one hundred forty-two thousand, two hundred ninety".