121454665 has 4 divisors (see below), whose sum is σ = 145745604. Its totient is φ = 97163728.

The previous prime is 121454657. The next prime is 121454677. The reversal of 121454665 is 566454121.

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 71723961 + 49730704 = 8469^2 + 7052^2 .

It is a cyclic number.

It is not a de Polignac number, because 121454665 - 2³ = 121454657 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 121454665.

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, 12145462 + ... + 12145471.

It is an arithmetic number, because the mean of its divisors is an integer number (36436401).

Almost surely, 2^121454665 is an apocalyptic number.

It is an amenable number.

121454665 is a deficient number, since it is larger than the sum of its proper divisors (24290939).

121454665 is an equidigital number, since it uses as much as digits as its factorization.

121454665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24290938.

The product of its digits is 28800, while the sum is 34.

The square root of 121454665 is about 11020.6472132992. The cubic root of 121454665 is about 495.2274776659.

The spelling of 121454665 in words is "one hundred twenty-one million, four hundred fifty-four thousand, six hundred sixty-five".