122710140 has 144 divisors (see below), whose sum is σ = 441272832. Its totient is φ = 28040256.

The previous prime is 122710139. The next prime is 122710157. The reversal of 122710140 is 41017221.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 32217 + ... + 35823.

Almost surely, 2^122710140 is an apocalyptic number.

122710140 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 122710140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220636416).

122710140 is an abundant number, since it is smaller than the sum of its proper divisors (318562692).

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

122710140 is a wasteful number, since it uses less digits than its factorization.

122710140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 122710140 is about 11077.4609004049. The cubic root of 122710140 is about 496.9280178386.

Adding to 122710140 its reverse (41017221), we get a palindrome (163727361).

The spelling of 122710140 in words is "one hundred twenty-two million, seven hundred ten thousand, one hundred forty".