121304145 has 8 divisors (see below), whose sum is σ = 194086656. Its totient is φ = 64695536.

The previous prime is 121304123. The next prime is 121304153. The reversal of 121304145 is 541403121.

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 121304145 - 2¹⁵ = 121271377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4043457 + ... + 4043486.

It is an arithmetic number, because the mean of its divisors is an integer number (24260832).

Almost surely, 2^121304145 is an apocalyptic number.

121304145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121304145 is a deficient number, since it is larger than the sum of its proper divisors (72782511).

121304145 is an equidigital number, since it uses as much as digits as its factorization.

121304145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8086951.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 121304145 is about 11013.8160961585. The cubic root of 121304145 is about 495.0228129472.

Adding to 121304145 its reverse (541403121), we get a palindrome (662707266).

The spelling of 121304145 in words is "one hundred twenty-one million, three hundred four thousand, one hundred forty-five".