122280420 has 48 divisors (see below), whose sum is σ = 357275520. Its totient is φ = 31190016.

The previous prime is 122280419. The next prime is 122280421. The reversal of 122280420 is 24082221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122280419) and next prime (122280421).

It is a super-2 number, since 2×122280420² = 29905002230752800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122280421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42925 + ... + 45684.

It is an arithmetic number, because the mean of its divisors is an integer number (7443240).

Almost surely, 2^122280420 is an apocalyptic number.

122280420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122280420 is an abundant number, since it is smaller than the sum of its proper divisors (234995100).

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

122280420 is a wasteful number, since it uses less digits than its factorization.

122280420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88644 (or 88642 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 122280420 is about 11058.0477481335. The cubic root of 122280420 is about 496.3472734930.

The spelling of 122280420 in words is "one hundred twenty-two million, two hundred eighty thousand, four hundred twenty".