121276440 has 112 divisors (see below), whose sum is σ = 409219200. Its totient is φ = 32332608.

The previous prime is 121276439. The next prime is 121276451. The reversal of 121276440 is 44672121.

121276440 is a `hidden beast` number, since 1 + 2 + 12 + 7 + 644 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 27081 + ... + 31239.

Almost surely, 2^121276440 is an apocalyptic number.

121276440 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 121276440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204609600).

121276440 is an abundant number, since it is smaller than the sum of its proper divisors (287942760).

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

121276440 is an equidigital number, since it uses as much as digits as its factorization.

121276440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4188 (or 4169 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 121276440 is about 11012.5582858843. The cubic root of 121276440 is about 494.9851235199.

The spelling of 121276440 in words is "one hundred twenty-one million, two hundred seventy-six thousand, four hundred forty".