120998549 has 12 divisors (see below), whose sum is σ = 142896672. Its totient is φ = 100361880.

The previous prime is 120998513. The next prime is 120998569. The reversal of 120998549 is 945899021.

It is not a de Polignac number, because 120998549 - 2¹² = 120994453 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120998569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2267 + ... + 15720.

It is an arithmetic number, because the mean of its divisors is an integer number (11908056).

Almost surely, 2^120998549 is an apocalyptic number.

It is an amenable number.

120998549 is a deficient number, since it is larger than the sum of its proper divisors (21898123).

120998549 is an equidigital number, since it uses as much as digits as its factorization.

120998549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056 (or 18025 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 120998549 is about 10999.9340452568. The cubic root of 120998549 is about 494.6067672445.

The spelling of 120998549 in words is "one hundred twenty million, nine hundred ninety-eight thousand, five hundred forty-nine".