122001440 has 96 divisors (see below), whose sum is σ = 317955456. Its totient is φ = 43868160.

The previous prime is 122001437. The next prime is 122001491. The reversal of 122001440 is 44100221.

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, 180944 + ... + 181616.

It is an arithmetic number, because the mean of its divisors is an integer number (3312036).

Almost surely, 2^122001440 is an apocalyptic number.

122001440 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 122001440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158977728).

122001440 is an abundant number, since it is smaller than the sum of its proper divisors (195954016).

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

122001440 is a wasteful number, since it uses less digits than its factorization.

122001440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 122001440 is about 11045.4262027321. The cubic root of 122001440 is about 495.9695177244.

Adding to 122001440 its reverse (44100221), we get a palindrome (166101661).

The spelling of 122001440 in words is "one hundred twenty-two million, one thousand, four hundred forty".