121416253 has 4 divisors (see below), whose sum is σ = 138761440. Its totient is φ = 104071068.

The previous prime is 121416247. The next prime is 121416257. The reversal of 121416253 is 352614121.

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.

It is a cyclic number.

It is not a de Polignac number, because 121416253 - 2⁵ = 121416221 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 (121416257) 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, 8672583 + ... + 8672596.

It is an arithmetic number, because the mean of its divisors is an integer number (34690360).

Almost surely, 2^121416253 is an apocalyptic number.

It is an amenable number.

121416253 is a deficient number, since it is larger than the sum of its proper divisors (17345187).

121416253 is an equidigital number, since it uses as much as digits as its factorization.

121416253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17345186.

The product of its digits is 1440, while the sum is 25.

The square root of 121416253 is about 11018.9043466218. The cubic root of 121416253 is about 495.1752642642.

The spelling of 121416253 in words is "one hundred twenty-one million, four hundred sixteen thousand, two hundred fifty-three".