122730660 has 96 divisors (see below), whose sum is σ = 411223680. Its totient is φ = 30208896.

The previous prime is 122730659. The next prime is 122730661. The reversal of 122730660 is 66037221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122730659) and next prime (122730661).

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

It is not an unprimeable number, because it can be changed into a prime (122730661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1722 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (4283580).

Almost surely, 2^122730660 is an apocalyptic number.

122730660 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 122730660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205611840).

122730660 is an abundant number, since it is smaller than the sum of its proper divisors (288493020).

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

122730660 is a wasteful number, since it uses less digits than its factorization.

122730660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17514 (or 17506 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 122730660 is about 11078.3870667169. The cubic root of 122730660 is about 496.9557156164.

Adding to 122730660 its reverse (66037221), we get a palindrome (188767881).

The spelling of 122730660 in words is "one hundred twenty-two million, seven hundred thirty thousand, six hundred sixty".