12042780 has 24 divisors (see below), whose sum is σ = 33719952. Its totient is φ = 3211392.

The previous prime is 12042769. The next prime is 12042809. The reversal of 12042780 is 8724021.

12042780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12042780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100297 + ... + 100416.

It is an arithmetic number, because the mean of its divisors is an integer number (1404998).

Almost surely, 2^12042780 is an apocalyptic number.

12042780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12042780 is an abundant number, since it is smaller than the sum of its proper divisors (21677172).

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

12042780 is a wasteful number, since it uses less digits than its factorization.

12042780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200725 (or 200723 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 12042780 is about 3470.2708827986. The cubic root of 12042780 is about 229.2145862693.

The spelling of 12042780 in words is "twelve million, forty-two thousand, seven hundred eighty".