121406544 has 120 divisors (see below), whose sum is σ = 397480512. Its totient is φ = 33868800.

The previous prime is 121406533. The next prime is 121406563. The reversal of 121406544 is 445604121.

121406544 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 0 + 654 + 4 = 666.

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 23 ways as a sum of consecutive naturals, for example, 41944 + ... + 44744.

Almost surely, 2^121406544 is an apocalyptic number.

121406544 is a gapful number since it is divisible by the number (14) 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 121406544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198740256).

121406544 is an abundant number, since it is smaller than the sum of its proper divisors (276073968).

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

121406544 is a wasteful number, since it uses less digits than its factorization.

121406544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865 (or 2856 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 121406544 is about 11018.4637767703. The cubic root of 121406544 is about 495.1620650846.

The spelling of 121406544 in words is "one hundred twenty-one million, four hundred six thousand, five hundred forty-four".