12042420 has 48 divisors (see below), whose sum is σ = 36314880. Its totient is φ = 2964096.

The previous prime is 12042419. The next prime is 12042421. The reversal of 12042420 is 2424021.

12042420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12042419) and next prime (12042421).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12042420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12042421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6940 + ... + 8499.

It is an arithmetic number, because the mean of its divisors is an integer number (756560).

Almost surely, 2^12042420 is an apocalyptic number.

12042420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12042420 is an abundant number, since it is smaller than the sum of its proper divisors (24272460).

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

12042420 is a wasteful number, since it uses less digits than its factorization.

12042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15464 (or 15462 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 12042420 is about 3470.2190132613. The cubic root of 12042420 is about 229.2123022432.

Adding to 12042420 its reverse (2424021), we get a palindrome (14466441).

The spelling of 12042420 in words is "twelve million, forty-two thousand, four hundred twenty".