121241345 has 8 divisors (see below), whose sum is σ = 145564776. Its totient is φ = 96942976.

The previous prime is 121241333. The next prime is 121241357. The reversal of 121241345 is 543142121.

It is an interprime number because it is at equal distance from previous prime (121241333) and next prime (121241357).

It can be written as a sum of positive squares in 4 ways, for example, as 3214849 + 118026496 = 1793^2 + 10864^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121241345 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121241345.

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, 6899 + ... + 17031.

It is an arithmetic number, because the mean of its divisors is an integer number (18195597).

Almost surely, 2^121241345 is an apocalyptic number.

It is an amenable number.

121241345 is a deficient number, since it is larger than the sum of its proper divisors (24323431).

121241345 is a wasteful number, since it uses less digits than its factorization.

121241345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12531.

The product of its digits is 960, while the sum is 23.

The square root of 121241345 is about 11010.9647624538. The cubic root of 121241345 is about 494.9373726161.

Adding to 121241345 its reverse (543142121), we get a palindrome (664383466).

The spelling of 121241345 in words is "one hundred twenty-one million, two hundred forty-one thousand, three hundred forty-five".