121453344 has 72 divisors (see below), whose sum is σ = 358197840. Its totient is φ = 40481856.

The previous prime is 121453337. The next prime is 121453349. The reversal of 121453344 is 443354121.

It is a happy number.

121453344 is a `hidden beast` number, since 121 + 4 + 533 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (121453349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34 + ... + 15585.

It is an arithmetic number, because the mean of its divisors is an integer number (4974970).

Almost surely, 2^121453344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121453344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179098920).

121453344 is an abundant number, since it is smaller than the sum of its proper divisors (236744496).

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

121453344 is an equidigital number, since it uses as much as digits as its factorization.

121453344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15644 (or 15624 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 121453344 is about 11020.5872801770. The cubic root of 121453344 is about 495.2256822145.

The spelling of 121453344 in words is "one hundred twenty-one million, four hundred fifty-three thousand, three hundred forty-four".