120988985 has 16 divisors (see below), whose sum is σ = 156827664. Its totient is φ = 89075712.

The previous prime is 120988969. The next prime is 120988997. The reversal of 120988985 is 589889021.

It can be written as a sum of positive squares in 8 ways, for example, as 11723776 + 109265209 = 3424^2 + 10453^2 .

It is a cyclic number.

It is not a de Polignac number, because 120988985 - 2⁴ = 120988969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20309 + ... + 25581.

It is an arithmetic number, because the mean of its divisors is an integer number (9801729).

Almost surely, 2^120988985 is an apocalyptic number.

It is an amenable number.

120988985 is a deficient number, since it is larger than the sum of its proper divisors (35838679).

120988985 is a wasteful number, since it uses less digits than its factorization.

120988985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5644.

The product of its (nonzero) digits is 414720, while the sum is 50.

The square root of 120988985 is about 10999.4993067867. The cubic root of 120988985 is about 494.5937352873.

The spelling of 120988985 in words is "one hundred twenty million, nine hundred eighty-eight thousand, nine hundred eighty-five".