121236745 has 8 divisors (see below), whose sum is σ = 166267584. Its totient is φ = 83133744.

The previous prime is 121236727. The next prime is 121236751. The reversal of 121236745 is 547632121.

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 121236745 - 2⁹ = 121236233 is a prime.

It is an alternating number because its digits alternate between odd and even.

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, 1731919 + ... + 1731988.

It is an arithmetic number, because the mean of its divisors is an integer number (20783448).

Almost surely, 2^121236745 is an apocalyptic number.

It is an amenable number.

121236745 is a deficient number, since it is larger than the sum of its proper divisors (45030839).

121236745 is an equidigital number, since it uses as much as digits as its factorization.

121236745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3463919.

The product of its digits is 10080, while the sum is 31.

The square root of 121236745 is about 11010.7558777770. The cubic root of 121236745 is about 494.9311130883.

Adding to 121236745 its reverse (547632121), we get a palindrome (668868866).

The spelling of 121236745 in words is "one hundred twenty-one million, two hundred thirty-six thousand, seven hundred forty-five".