120861380 has 24 divisors (see below), whose sum is σ = 256142040. Its totient is φ = 47900160.

The previous prime is 120861373. The next prime is 120861401. The reversal of 120861380 is 83168021.

It can be written as a sum of positive squares in 4 ways, for example, as 17960644 + 102900736 = 4238^2 + 10144^2 .

It is a super-3 number, since 3×120861380³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25541 + ... + 29900.

It is an arithmetic number, because the mean of its divisors is an integer number (10672585).

Almost surely, 2^120861380 is an apocalyptic number.

120861380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120861380 is an abundant number, since it is smaller than the sum of its proper divisors (135280660).

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

120861380 is a wasteful number, since it uses less digits than its factorization.

120861380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55559 (or 55557 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 120861380 is about 10993.6972852630. The cubic root of 120861380 is about 494.4197942889.

The spelling of 120861380 in words is "one hundred twenty million, eight hundred sixty-one thousand, three hundred eighty".