122280140 has 24 divisors (see below), whose sum is σ = 259439712. Its totient is φ = 48407040.

The previous prime is 122280139. The next prime is 122280187. The reversal of 122280140 is 41082221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29576 + ... + 33455.

It is an arithmetic number, because the mean of its divisors is an integer number (10809988).

Almost surely, 2^122280140 is an apocalyptic number.

122280140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122280140 is an abundant number, since it is smaller than the sum of its proper divisors (137159572).

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

122280140 is a wasteful number, since it uses less digits than its factorization.

122280140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63137 (or 63135 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 122280140 is about 11058.0350876636. The cubic root of 122280140 is about 496.3468946443.

The spelling of 122280140 in words is "one hundred twenty-two million, two hundred eighty thousand, one hundred forty".