122443650 has 180 divisors, whose sum is σ = 396398178. Its totient is φ = 27941760.

The previous prime is 122443649. The next prime is 122443663. The reversal of 122443650 is 56344221.

122443650 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 4 + 3 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 54331641 + 68112009 = 7371^2 + 8253^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

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 89 ways as a sum of consecutive naturals, for example, 198142 + ... + 198758.

Almost surely, 2^122443650 is an apocalyptic number.

122443650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122443650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198199089).

122443650 is an abundant number, since it is smaller than the sum of its proper divisors (273954528).

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

122443650 is a wasteful number, since it uses less digits than its factorization.

122443650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 122443650 is about 11065.4258842577. The cubic root of 122443650 is about 496.5680304002.

Adding to 122443650 its reverse (56344221), we get a palindrome (178787871).

The spelling of 122443650 in words is "one hundred twenty-two million, four hundred forty-three thousand, six hundred fifty".