122505030 has 48 divisors (see below), whose sum is σ = 325301184. Its totient is φ = 31971840.

The previous prime is 122505017. The next prime is 122505037. The reversal of 122505030 is 30505221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122504994 and 122505012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122505037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10251 + ... + 18710.

It is an arithmetic number, because the mean of its divisors is an integer number (6777108).

Almost surely, 2^122505030 is an apocalyptic number.

122505030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122505030 is an abundant number, since it is smaller than the sum of its proper divisors (202796154).

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

122505030 is a wasteful number, since it uses less digits than its factorization.

122505030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29021 (or 29018 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 122505030 is about 11068.1990404943. The cubic root of 122505030 is about 496.6509917028.

The spelling of 122505030 in words is "one hundred twenty-two million, five hundred five thousand, thirty".