121315452 has 24 divisors (see below), whose sum is σ = 290720976. Its totient is φ = 39345408.

The previous prime is 121315421. The next prime is 121315459. The reversal of 121315452 is 254513121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121315459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136173 + ... + 137060.

It is an arithmetic number, because the mean of its divisors is an integer number (12113374).

Almost surely, 2^121315452 is an apocalyptic number.

121315452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121315452 is an abundant number, since it is smaller than the sum of its proper divisors (169405524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121315452 is a wasteful number, since it uses less digits than its factorization.

121315452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273277 (or 273275 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 121315452 is about 11014.3293940212. The cubic root of 121315452 is about 495.0381931555.

Adding to 121315452 its reverse (254513121), we get a palindrome (375828573).

The spelling of 121315452 in words is "one hundred twenty-one million, three hundred fifteen thousand, four hundred fifty-two".