120502440 has 96 divisors (see below), whose sum is σ = 396138600. Its totient is φ = 31764480.

The previous prime is 120502439. The next prime is 120502441. The reversal of 120502440 is 44205021.

120502440 is a `hidden beast` number, since 120 + 502 + 4 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (120502439) and next prime (120502441).

It can be written as a sum of positive squares in 4 ways, for example, as 75585636 + 44916804 = 8694^2 + 6702^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (120502441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30160 + ... + 33920.

Almost surely, 2^120502440 is an apocalyptic number.

120502440 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 120502440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198069300).

120502440 is an abundant number, since it is smaller than the sum of its proper divisors (275636160).

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

120502440 is a wasteful number, since it uses less digits than its factorization.

120502440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867 (or 3860 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 120502440 is about 10977.3603384420. The cubic root of 120502440 is about 493.9298583120.

Adding to 120502440 its reverse (44205021), we get a palindrome (164707461).

The spelling of 120502440 in words is "one hundred twenty million, five hundred two thousand, four hundred forty".