121136245 has 8 divisors (see below), whose sum is σ = 145490616. Its totient is φ = 96824256.

The previous prime is 121136243. The next prime is 121136299. The reversal of 121136245 is 542631121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 114244 + 121022001 = 338^2 + 11001^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121136245 - 2¹ = 121136243 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 (121136243) 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, 3922 + ... + 16051.

It is an arithmetic number, because the mean of its divisors is an integer number (18186327).

Almost surely, 2^121136245 is an apocalyptic number.

It is an amenable number.

121136245 is a deficient number, since it is larger than the sum of its proper divisors (24354371).

121136245 is a wasteful number, since it uses less digits than its factorization.

121136245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21191.

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

The square root of 121136245 is about 11006.1912122223. The cubic root of 121136245 is about 494.7943164775.

Adding to 121136245 its reverse (542631121), we get a palindrome (663767366).

The spelling of 121136245 in words is "one hundred twenty-one million, one hundred thirty-six thousand, two hundred forty-five".