122454820 has 24 divisors (see below), whose sum is σ = 266023800. Its totient is φ = 47292672.

The previous prime is 122454817. The next prime is 122454821. The reversal of 122454820 is 28454221.

It can be written as a sum of positive squares in 4 ways, for example, as 18455616 + 103999204 = 4296^2 + 10198^2 .

It is not an unprimeable number, because it can be changed into a prime (122454821) 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, 104985 + ... + 106144.

It is an arithmetic number, because the mean of its divisors is an integer number (11084325).

Almost surely, 2^122454820 is an apocalyptic number.

122454820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122454820 is an abundant number, since it is smaller than the sum of its proper divisors (143568980).

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

122454820 is a wasteful number, since it uses less digits than its factorization.

122454820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211167 (or 211165 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 122454820 is about 11065.9305980112. The cubic root of 122454820 is about 496.5831298527.

The spelling of 122454820 in words is "one hundred twenty-two million, four hundred fifty-four thousand, eight hundred twenty".