120145505440 has 48 divisors (see below), whose sum is σ = 283864581000. Its totient is φ = 48054676480.

The previous prime is 120145505371. The next prime is 120145505443. The reversal of 120145505440 is 44505541021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 108348938896 + 11796566544 = 329164^2 + 108612^2 .

It is not an unprimeable number, because it can be changed into a prime (120145505443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3944670 + ... + 3975010.

Almost surely, 2^120145505440 is an apocalyptic number.

120145505440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120145505440 is an abundant number, since it is smaller than the sum of its proper divisors (163719075560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120145505440 is a wasteful number, since it uses less digits than its factorization.

120145505440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55105 (or 55097 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 120145505440 in words is "one hundred twenty billion, one hundred forty-five million, five hundred five thousand, four hundred forty".