120547840 has 180 divisors, whose sum is σ = 347416938. Its totient is φ = 39997440.

The previous prime is 120547793. The next prime is 120547841. The reversal of 120547840 is 48745021.

It can be written as a sum of positive squares in only one way, i.e., 108493056 + 12054784 = 10416^2 + 3472^2 .

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (120547841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3888625 + ... + 3888655.

Almost surely, 2^120547840 is an apocalyptic number.

120547840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120547840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173708469).

120547840 is an abundant number, since it is smaller than the sum of its proper divisors (226869098).

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

120547840 is an frugal number, since it uses more digits than its factorization.

120547840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 120547840 is about 10979.4280361046. The cubic root of 120547840 is about 493.9918808459.

The spelling of 120547840 in words is "one hundred twenty million, five hundred forty-seven thousand, eight hundred forty".