121873253 has 4 divisors (see below), whose sum is σ = 121980108. Its totient is φ = 121766400.

The previous prime is 121873249. The next prime is 121873259. The reversal of 121873253 is 352378121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 63473089 = 7642^2 + 7967^2 .

It is a cyclic number.

It is not a de Polignac number, because 121873253 - 2² = 121873249 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 (121873259) 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, 51698 + ... + 54003.

It is an arithmetic number, because the mean of its divisors is an integer number (30495027).

Almost surely, 2^121873253 is an apocalyptic number.

It is an amenable number.

121873253 is a deficient number, since it is larger than the sum of its proper divisors (106855).

121873253 is a wasteful number, since it uses less digits than its factorization.

121873253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106854.

The product of its digits is 10080, while the sum is 32.

The square root of 121873253 is about 11039.6219591071. The cubic root of 121873253 is about 495.7957516761.

The spelling of 121873253 in words is "one hundred twenty-one million, eight hundred seventy-three thousand, two hundred fifty-three".