120390420 has 24 divisors (see below), whose sum is σ = 337093344. Its totient is φ = 32104096.

The previous prime is 120390419. The next prime is 120390433. The reversal of 120390420 is 24093021.

It is a congruent number.

It is an unprimeable number.

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, 1003194 + ... + 1003313.

It is an arithmetic number, because the mean of its divisors is an integer number (14045556).

Almost surely, 2^120390420 is an apocalyptic number.

120390420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120390420 is an abundant number, since it is smaller than the sum of its proper divisors (216702924).

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

120390420 is a wasteful number, since it uses less digits than its factorization.

120390420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006519 (or 2006517 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 120390420 is about 10972.2568325755. The cubic root of 120390420 is about 493.7767571891.

The spelling of 120390420 in words is "one hundred twenty million, three hundred ninety thousand, four hundred twenty".