122049720 has 128 divisors (see below), whose sum is σ = 438177600. Its totient is φ = 30039552.

The previous prime is 122049709. The next prime is 122049721. The reversal of 122049720 is 27940221.

It is a super-2 number, since 2×122049720² = 29792268304156800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122049721) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9694 + ... + 18386.

Almost surely, 2^122049720 is an apocalyptic number.

122049720 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 122049720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219088800).

122049720 is an abundant number, since it is smaller than the sum of its proper divisors (316127880).

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

122049720 is a wasteful number, since it uses less digits than its factorization.

122049720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8726 (or 8716 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 122049720 is about 11047.6115065656. The cubic root of 122049720 is about 496.0349329368.

Adding to 122049720 its reverse (27940221), we get a palindrome (149989941).

The spelling of 122049720 in words is "one hundred twenty-two million, forty-nine thousand, seven hundred twenty".