121207453 has 4 divisors (see below), whose sum is σ = 121326048. Its totient is φ = 121088860.

The previous prime is 121207451. The next prime is 121207481. The reversal of 121207453 is 354702121.

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: 354702121 = 1559 ⋅227519.

It is a cyclic number.

It is not a de Polignac number, because 121207453 - 2¹ = 121207451 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 (121207451) 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, 57751 + ... + 59812.

It is an arithmetic number, because the mean of its divisors is an integer number (30331512).

Almost surely, 2^121207453 is an apocalyptic number.

It is an amenable number.

121207453 is a deficient number, since it is larger than the sum of its proper divisors (118595).

121207453 is a wasteful number, since it uses less digits than its factorization.

121207453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118594.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 121207453 is about 11009.4256435111. The cubic root of 121207453 is about 494.8912497892.

Adding to 121207453 its reverse (354702121), we get a palindrome (475909574).

The spelling of 121207453 in words is "one hundred twenty-one million, two hundred seven thousand, four hundred fifty-three".