122178240 has 224 divisors, whose sum is σ = 438912000. Its totient is φ = 31988736.

The previous prime is 122178187. The next prime is 122178253. The reversal of 122178240 is 42871221.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 682471 + ... + 682649.

Almost surely, 2^122178240 is an apocalyptic number.

122178240 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 122178240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219456000).

122178240 is an abundant number, since it is smaller than the sum of its proper divisors (316733760).

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

122178240 is a wasteful number, since it uses less digits than its factorization.

122178240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 122178240 is about 11053.4266180221. The cubic root of 122178240 is about 496.2089823487.

The spelling of 122178240 in words is "one hundred twenty-two million, one hundred seventy-eight thousand, two hundred forty".