121456453 has 4 divisors (see below), whose sum is σ = 122032288. Its totient is φ = 120880620.

The previous prime is 121456441. The next prime is 121456463. The reversal of 121456453 is 354654121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354654121 = 149 ⋅2380229.

It is a cyclic number.

It is not a de Polignac number, because 121456453 - 2⁵ = 121456421 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 (121456403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287601 + ... + 288022.

It is an arithmetic number, because the mean of its divisors is an integer number (30508072).

Almost surely, 2^121456453 is an apocalyptic number.

It is an amenable number.

121456453 is a deficient number, since it is larger than the sum of its proper divisors (575835).

121456453 is an equidigital number, since it uses as much as digits as its factorization.

121456453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575834.

The product of its digits is 14400, while the sum is 31.

The square root of 121456453 is about 11020.7283334633. The cubic root of 121456453 is about 495.2299078248.

The spelling of 121456453 in words is "one hundred twenty-one million, four hundred fifty-six thousand, four hundred fifty-three".