120420424989 has 12 divisors (see below), whose sum is σ = 173946230172. Its totient is φ = 80277691200.

The previous prime is 120420424981. The next prime is 120420424991. The reversal of 120420424989 is 989424024021.

120420424989 is a `hidden beast` number, since 120 + 4 + 20 + 424 + 9 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1889640900 + 118530784089 = 43470^2 + 344283^2 .

It is not a de Polignac number, because 120420424989 - 2³ = 120420424981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120420424981) 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, 103009 + ... + 501449.

It is an arithmetic number, because the mean of its divisors is an integer number (14495519181).

Almost surely, 2^120420424989 is an apocalyptic number.

It is an amenable number.

120420424989 is a deficient number, since it is larger than the sum of its proper divisors (53525805183).

120420424989 is a wasteful number, since it uses less digits than its factorization.

120420424989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432028 (or 432025 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 120420424989 in words is "one hundred twenty billion, four hundred twenty million, four hundred twenty-four thousand, nine hundred eighty-nine".