142090 has 16 divisors (see below), whose sum is σ = 275688. Its totient is φ = 52416.

The previous prime is 142067. The next prime is 142097. The reversal of 142090 is 90241.

It can be written as a sum of positive squares in 4 ways, for example, as 127449 + 14641 = 357^2 + 121^2 .

It is not an unprimeable number, because it can be changed into a prime (142097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417 + ... + 676.

2¹⁴²⁰⁹⁰ is an apocalyptic number.

142090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142090 is a deficient number, since it is larger than the sum of its proper divisors (133598).

142090 is a wasteful number, since it uses less digits than its factorization.

142090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 142090 is about 376.9482723133. The cubic root of 142090 is about 52.1820541845.

The spelling of 142090 in words is "one hundred forty-two thousand, ninety".