42290 has 8 divisors (see below), whose sum is σ = 76140. Its totient is φ = 16912.

The previous prime is 42283. The next prime is 42293. The reversal of 42290 is 9224.

It can be written as a sum of positive squares in 2 ways, for example, as 38809 + 3481 = 197^2 + 59^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 14.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (42293) 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 3 ways as a sum of consecutive naturals, for example, 2105 + ... + 2124.

2⁴²²⁹⁰ is an apocalyptic number.

42290 is a deficient number, since it is larger than the sum of its proper divisors (33850).

42290 is a wasteful number, since it uses less digits than its factorization.

42290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4236.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 42290 is about 205.6453257431. The cubic root of 42290 is about 34.8400868041.

It can be divided in two parts, 422 and 90, that added together give a 9-th power (512 = 2⁹).

The spelling of 42290 in words is "forty-two thousand, two hundred ninety".