122620 has 12 divisors (see below), whose sum is σ = 257544. Its totient is φ = 49040.

The previous prime is 122611. The next prime is 122651. The reversal of 122620 is 26221.

122620 = T₇₅ + T₇₆ + ... + T₁₀₄.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 122620.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3046 + ... + 3085.

It is an arithmetic number, because the mean of its divisors is an integer number (21462).

2¹²²⁶²⁰ is an apocalyptic number.

122620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122620 is an abundant number, since it is smaller than the sum of its proper divisors (134924).

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

122620 is a wasteful number, since it uses less digits than its factorization.

122620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6140 (or 6138 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 122620 is about 350.1713866095. The cubic root of 122620 is about 49.6806310798.

Adding to 122620 its reverse (26221), we get a palindrome (148841).

The spelling of 122620 in words is "one hundred twenty-two thousand, six hundred twenty".