121303245 has 32 divisors (see below), whose sum is σ = 234862848. Its totient is φ = 52190208.

The previous prime is 121303241. The next prime is 121303261. The reversal of 121303245 is 542303121.

It is not a de Polignac number, because 121303245 - 2² = 121303241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121303241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32194 + ... + 35763.

It is an arithmetic number, because the mean of its divisors is an integer number (7339464).

Almost surely, 2^121303245 is an apocalyptic number.

121303245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121303245 is a deficient number, since it is larger than the sum of its proper divisors (113559603).

121303245 is a wasteful number, since it uses less digits than its factorization.

121303245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67989.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121303245 is about 11013.7752383095. The cubic root of 121303245 is about 495.0215886921.

Adding to 121303245 its reverse (542303121), we get a palindrome (663606366).

The spelling of 121303245 in words is "one hundred twenty-one million, three hundred three thousand, two hundred forty-five".