121230745 has 4 divisors (see below), whose sum is σ = 145476900. Its totient is φ = 96984592.

The previous prime is 121230737. The next prime is 121230751. The reversal of 121230745 is 547032121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23299929 + 97930816 = 4827^2 + 9896^2 .

It is a cyclic number.

It is not a de Polignac number, because 121230745 - 2³ = 121230737 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 3 ways as a sum of consecutive naturals, for example, 12123070 + ... + 12123079.

It is an arithmetic number, because the mean of its divisors is an integer number (36369225).

Almost surely, 2^121230745 is an apocalyptic number.

It is an amenable number.

121230745 is a deficient number, since it is larger than the sum of its proper divisors (24246155).

121230745 is an equidigital number, since it uses as much as digits as its factorization.

121230745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24246154.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 121230745 is about 11010.4834135473. The cubic root of 121230745 is about 494.9229482489.

Adding to 121230745 its reverse (547032121), we get a palindrome (668262866).

The spelling of 121230745 in words is "one hundred twenty-one million, two hundred thirty thousand, seven hundred forty-five".