120021489 has 24 divisors (see below), whose sum is σ = 199177472. Its totient is φ = 68221440.

The previous prime is 120021463. The next prime is 120021493. The reversal of 120021489 is 984120021.

It is not a de Polignac number, because 120021489 - 2⁵ = 120021457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7224 + ... + 17094.

Almost surely, 2^120021489 is an apocalyptic number.

It is an amenable number.

120021489 is a deficient number, since it is larger than the sum of its proper divisors (79155983).

120021489 is a wasteful number, since it uses less digits than its factorization.

120021489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077 (or 10074 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 120021489 is about 10955.4319403664. The cubic root of 120021489 is about 493.2718555706.

The spelling of 120021489 in words is "one hundred twenty million, twenty-one thousand, four hundred eighty-nine".