120420440 has 128 divisors (see below), whose sum is σ = 323136000. Its totient is φ = 40360320.

The previous prime is 120420437. The next prime is 120420463. The reversal of 120420440 is 44024021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 919175 + ... + 919305.

It is an arithmetic number, because the mean of its divisors is an integer number (2524500).

Almost surely, 2^120420440 is an apocalyptic number.

120420440 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 120420440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161568000).

120420440 is an abundant number, since it is smaller than the sum of its proper divisors (202715560).

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

120420440 is a wasteful number, since it uses less digits than its factorization.

120420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 120420440 is about 10973.6247429917. The cubic root of 120420440 is about 493.8177957433.

Adding to 120420440 its reverse (44024021), we get a palindrome (164444461).

The spelling of 120420440 in words is "one hundred twenty million, four hundred twenty thousand, four hundred forty".