122054640 has 80 divisors (see below), whose sum is σ = 387201408. Its totient is φ = 31788288.

The previous prime is 122054633. The next prime is 122054641. The reversal of 122054640 is 46450221.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 122054640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122054641) 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, 4407 + ... + 16233.

Almost surely, 2^122054640 is an apocalyptic number.

122054640 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 122054640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193600704).

122054640 is an abundant number, since it is smaller than the sum of its proper divisors (265146768).

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

122054640 is a wasteful number, since it uses less digits than its factorization.

122054640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11886 (or 11880 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 122054640 is about 11047.8341768873. The cubic root of 122054640 is about 496.0415981414.

The spelling of 122054640 in words is "one hundred twenty-two million, fifty-four thousand, six hundred forty".