122440020 has 48 divisors (see below), whose sum is σ = 345885120. Its totient is φ = 32359936.

The previous prime is 122440013. The next prime is 122440033. The reversal of 122440020 is 20044221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2250 + ... + 15809.

It is an arithmetic number, because the mean of its divisors is an integer number (7205940).

Almost surely, 2^122440020 is an apocalyptic number.

122440020 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 122440020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172942560).

122440020 is an abundant number, since it is smaller than the sum of its proper divisors (223445100).

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

122440020 is a wasteful number, since it uses less digits than its factorization.

122440020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18184 (or 18182 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 122440020 is about 11065.2618586277. The cubic root of 122440020 is about 496.5631232184.

Adding to 122440020 its reverse (20044221), we get a palindrome (142484241).

The spelling of 122440020 in words is "one hundred twenty-two million, four hundred forty thousand, twenty".