122290 has 16 divisors (see below), whose sum is σ = 251712. Its totient is φ = 41904.

The previous prime is 122279. The next prime is 122299. The reversal of 122290 is 92221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122299) 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 7 ways as a sum of consecutive naturals, for example, 804 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (15732).

2¹²²²⁹⁰ is an apocalyptic number.

122290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122290 is an abundant number, since it is smaller than the sum of its proper divisors (129422).

It is a weird number, because it is abundant, but not a pseudoperfect number.

122290 is a wasteful number, since it uses less digits than its factorization.

122290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

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

The square root of 122290 is about 349.6998713182. The cubic root of 122290 is about 49.6360235183.

The spelling of 122290 in words is "one hundred twenty-two thousand, two hundred ninety".