12141780 has 48 divisors (see below), whose sum is σ = 38855040. Its totient is φ = 2775168.

The previous prime is 12141761. The next prime is 12141793. The reversal of 12141780 is 8714121.

It is a self number, because there is not a number n which added to its sum of digits gives 12141780.

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 15 ways as a sum of consecutive naturals, for example, 14035 + ... + 14874.

It is an arithmetic number, because the mean of its divisors is an integer number (809480).

Almost surely, 2^12141780 is an apocalyptic number.

12141780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12141780 is an abundant number, since it is smaller than the sum of its proper divisors (26713260).

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

12141780 is a wasteful number, since it uses less digits than its factorization.

12141780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28928 (or 28926 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 12141780 is about 3484.5057038266. The cubic root of 12141780 is about 229.8409738778.

It can be divided in two parts, 12141 and 780, that added together give a palindrome (12921).

The spelling of 12141780 in words is "twelve million, one hundred forty-one thousand, seven hundred eighty".