121481453 has 4 divisors (see below), whose sum is σ = 121503708. Its totient is φ = 121459200.

The previous prime is 121481449. The next prime is 121481489. The reversal of 121481453 is 354184121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354184121 = 167 ⋅2120863.

It can be written as a sum of positive squares in 2 ways, for example, as 35307364 + 86174089 = 5942^2 + 9283^2 .

It is a cyclic number.

It is not a de Polignac number, because 121481453 - 2² = 121481449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121481443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275 + ... + 15927.

It is an arithmetic number, because the mean of its divisors is an integer number (30375927).

Almost surely, 2^121481453 is an apocalyptic number.

It is an amenable number.

121481453 is a deficient number, since it is larger than the sum of its proper divisors (22255).

121481453 is an equidigital number, since it uses as much as digits as its factorization.

121481453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22254.

The product of its digits is 3840, while the sum is 29.

The square root of 121481453 is about 11021.8625014105. The cubic root of 121481453 is about 495.2638840580.

The spelling of 121481453 in words is "one hundred twenty-one million, four hundred eighty-one thousand, four hundred fifty-three".