122545800 has 144 divisors (see below), whose sum is σ = 443291940. Its totient is φ = 30159360.

The previous prime is 122545789. The next prime is 122545811. The reversal of 122545800 is 8545221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122545789) and next prime (122545811).

It can be written as a sum of positive squares in 6 ways, for example, as 44435556 + 78110244 = 6666^2 + 8838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20782 + ... + 26018.

Almost surely, 2^122545800 is an apocalyptic number.

122545800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122545800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221645970).

122545800 is an abundant number, since it is smaller than the sum of its proper divisors (320746140).

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

122545800 is a wasteful number, since it uses less digits than its factorization.

122545800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5272 (or 5260 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 122545800 is about 11070.0406503319. The cubic root of 122545800 is about 496.7060811826.

The spelling of 122545800 in words is "one hundred twenty-two million, five hundred forty-five thousand, eight hundred".