121886240 has 48 divisors (see below), whose sum is σ = 329095872. Its totient is φ = 41789184.

The previous prime is 121886227. The next prime is 121886249. The reversal of 121886240 is 42688121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 121886197 and 121886206.

It is not an unprimeable number, because it can be changed into a prime (121886249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53294 + ... + 55533.

It is an arithmetic number, because the mean of its divisors is an integer number (6856164).

Almost surely, 2^121886240 is an apocalyptic number.

121886240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121886240 is an abundant number, since it is smaller than the sum of its proper divisors (207209632).

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

121886240 is a wasteful number, since it uses less digits than its factorization.

121886240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108849 (or 108841 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 121886240 is about 11040.2101429275. The cubic root of 121886240 is about 495.8133619682.

The spelling of 121886240 in words is "one hundred twenty-one million, eight hundred eighty-six thousand, two hundred forty".