120521240 has 32 divisors (see below), whose sum is σ = 309912480. Its totient is φ = 41321472.

The previous prime is 120521221. The next prime is 120521249. The reversal of 120521240 is 42125021.

It is a super-2 number, since 2×120521240² = 29050738582275200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120521249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214937 + ... + 215496.

It is an arithmetic number, because the mean of its divisors is an integer number (9684765).

Almost surely, 2^120521240 is an apocalyptic number.

120521240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120521240 is an abundant number, since it is smaller than the sum of its proper divisors (189391240).

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

120521240 is a wasteful number, since it uses less digits than its factorization.

120521240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430451 (or 430447 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 120521240 is about 10978.2166129112. The cubic root of 120521240 is about 493.9555435415.

Adding to 120521240 its reverse (42125021), we get a palindrome (162646261).

The spelling of 120521240 in words is "one hundred twenty million, five hundred twenty-one thousand, two hundred forty".