121045489 has 4 divisors (see below), whose sum is σ = 123997860. Its totient is φ = 118093120.

The previous prime is 121045469. The next prime is 121045501. The reversal of 121045489 is 984540121.

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 12531600 + 108513889 = 3540^2 + 10417^2 .

It is not a de Polignac number, because 121045489 - 2¹¹ = 121043441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121045469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476124 + ... + 1476205.

It is an arithmetic number, because the mean of its divisors is an integer number (30999465).

Almost surely, 2^121045489 is an apocalyptic number.

It is an amenable number.

121045489 is a deficient number, since it is larger than the sum of its proper divisors (2952371).

121045489 is an equidigital number, since it uses as much as digits as its factorization.

121045489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952370.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 121045489 is about 11002.0674875225. The cubic root of 121045489 is about 494.6707179841.

The spelling of 121045489 in words is "one hundred twenty-one million, forty-five thousand, four hundred eighty-nine".