120421740 has 24 divisors (see below), whose sum is σ = 337181040. Its totient is φ = 32112448.

The previous prime is 120421739. The next prime is 120421757. The reversal of 120421740 is 47124021.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003455 + ... + 1003574.

It is an arithmetic number, because the mean of its divisors is an integer number (14049210).

Almost surely, 2^120421740 is an apocalyptic number.

120421740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120421740 is an abundant number, since it is smaller than the sum of its proper divisors (216759300).

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

120421740 is a wasteful number, since it uses less digits than its factorization.

120421740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007041 (or 2007039 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 120421740 is about 10973.6839757668. The cubic root of 120421740 is about 493.8195727418.

Adding to 120421740 its reverse (47124021), we get a palindrome (167545761).

The spelling of 120421740 in words is "one hundred twenty million, four hundred twenty-one thousand, seven hundred forty".