122901408 has 144 divisors (see below), whose sum is σ = 417130560. Its totient is φ = 35102592.

The previous prime is 122901407. The next prime is 122901419. The reversal of 122901408 is 804109221.

It is a tau number, because it is divible by the number of its divisors (144).

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 (122901403) 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 23 ways as a sum of consecutive naturals, for example, 40885 + ... + 43787.

It is an arithmetic number, because the mean of its divisors is an integer number (2896740).

Almost surely, 2^122901408 is an apocalyptic number.

122901408 is a gapful number since it is divisible by the number (18) 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 122901408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208565280).

122901408 is an abundant number, since it is smaller than the sum of its proper divisors (294229152).

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

122901408 is a wasteful number, since it uses less digits than its factorization.

122901408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936 (or 2915 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 122901408 is about 11086.0907447125. The cubic root of 122901408 is about 497.1860706448.

The spelling of 122901408 in words is "one hundred twenty-two million, nine hundred one thousand, four hundred eight".