122740880 has 80 divisors (see below), whose sum is σ = 305230464. Its totient is φ = 45788160.

The previous prime is 122740861. The next prime is 122740883. The reversal of 122740880 is 88047221.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (122740883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74627 + ... + 76253.

Almost surely, 2^122740880 is an apocalyptic number.

122740880 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 122740880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152615232).

122740880 is an abundant number, since it is smaller than the sum of its proper divisors (182489584).

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

122740880 is a wasteful number, since it uses less digits than its factorization.

122740880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1698 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 122740880 is about 11078.8483155967. The cubic root of 122740880 is about 496.9695093618.

The spelling of 122740880 in words is "one hundred twenty-two million, seven hundred forty thousand, eight hundred eighty".