121342489 has 4 divisors (see below), whose sum is σ = 122020560. Its totient is φ = 120664420.

The previous prime is 121342483. The next prime is 121342519. The reversal of 121342489 is 984243121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121342489 - 2²¹ = 119245337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121342483) 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, 338767 + ... + 339124.

It is an arithmetic number, because the mean of its divisors is an integer number (30505140).

Almost surely, 2^121342489 is an apocalyptic number.

It is an amenable number.

121342489 is a deficient number, since it is larger than the sum of its proper divisors (678071).

121342489 is an equidigital number, since it uses as much as digits as its factorization.

121342489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678070.

The product of its digits is 13824, while the sum is 34.

The square root of 121342489 is about 11015.5566813484. The cubic root of 121342489 is about 495.0749660293.

The spelling of 121342489 in words is "one hundred twenty-one million, three hundred forty-two thousand, four hundred eighty-nine".