12141778 has 16 divisors (see below), whose sum is σ = 20554560. Its totient is φ = 5328400.

The previous prime is 12141761. The next prime is 12141793. The reversal of 12141778 is 87714121.

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, 8878 + ... + 10153.

It is an arithmetic number, because the mean of its divisors is an integer number (1284660).

Almost surely, 2^12141778 is an apocalyptic number.

12141778 is a deficient number, since it is larger than the sum of its proper divisors (8412782).

12141778 is a wasteful number, since it uses less digits than its factorization.

12141778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19073.

The product of its digits is 3136, while the sum is 31.

The square root of 12141778 is about 3484.5054168418. The cubic root of 12141778 is about 229.8409612579.

Adding to 12141778 its reverse (87714121), we get a palindrome (99855899).

It can be divided in two parts, 1214 and 1778, that added together give a palindrome (2992).

The spelling of 12141778 in words is "twelve million, one hundred forty-one thousand, seven hundred seventy-eight".